| 单词 | correlation coefficient |
| 例句 | And he rattles off mathematical terms such as “correlation coefficient” and “sixth order polynomial” that might not be familiar to his audience. The 'Johnny Appleseed of election fraud' wants to upend voting in America. Why he's focused on California 2023-07-31T04:00:00Z To provide mathematical precision to the measurement of what we see we use the correlation coefficient. Introductory Business Statistics 2017-11-29T00:00:00Z We need to look at both the correlation coefficient r and the sample size n, together. High School Statistics 2020-03-27T00:00:00Z We need to look at both the value of the correlation coefficient r and the sample size n, together. Introductory Statistics 2013-09-19T00:00:00Z We should compute the correlation coefficient only for data that follows a linear pattern or to determine the degree to which a data set is linear. Algebra and Trigonometry 2015-02-13T00:00:00Z A low “correlation coefficient,” marked in blue, is usually an indicator of spiky objects in the atmosphere that aren’t rain or hail. Severe storms bring damage, possible tornadoes in Fairfax County 2022-03-31T04:00:00Z The correlation coefficient r ranges in value from -1 to 1. Introductory Business Statistics 2017-11-29T00:00:00Z We perform a hypothesis test of the significance of the correlation coefficient to decide whether the linear relationship in the sample data is strong enough to use to model the relationship in the population. High School Statistics 2020-03-27T00:00:00Z We perform a hypothesis test of the "significance of the correlation coefficient" to decide whether the linear relationship in the sample data is strong enough to use to model the relationship in the population. Introductory Statistics 2013-09-19T00:00:00Z If the data exhibits a nonlinear pattern, the correlation coefficient for a linear regression is meaningless. Algebra and Trigonometry 2015-02-13T00:00:00Z Their correlation coefficient has risen to 0.41 now from 0.1 in September, where zero means no correlation and 1 implies perfectly synchronised movement. THE CRYPTOVERSE-Teenage bitcoin throws an interest rate tantrum 2022-01-25T05:00:00Z Remember, all the correlation coefficient tells us is whether or not the data are linearly related. Introductory Business Statistics 2017-11-29T00:00:00Z But, because we have only sample data, we cannot calculate the population correlation coefficient. High School Statistics 2020-03-27T00:00:00Z The sample correlation coefficient, r, is our estimate of the unknown population correlation coefficient. Introductory Statistics 2013-09-19T00:00:00Z To get a sense for the relationship between the value of and the graph of the data, Figure 7 shows some large data sets with their correlation coefficients. Algebra and Trigonometry 2015-02-13T00:00:00Z The correlation coefficient from comparing the increase in bar foot traffic and the increase in cases per capita three weeks later is .489 for 43 point. More cities and states are opening bars and restaurants despite mounting evidence of potential danger 2020-09-14T04:00:00Z This simply cannot be accomplished with a correlation coefficient. Introductory Business Statistics 2017-11-29T00:00:00Z Conclusion: There is insufficient evidence to conclude there is a significant linear relationship between x and y because the correlation coefficient is not significantly different from zero. High School Statistics 2020-03-27T00:00:00Z Examining the scatterplot and testing the significance of the correlation coefficient helps us determine if it is appropriate to do this. Introductory Statistics 2013-09-19T00:00:00Z The calculator will also provide you with the correlation coefficient, This value is very close to 1, which suggests a strong increasing linear relationship. Algebra and Trigonometry 2015-02-13T00:00:00Z One minus the Pearson correlation coefficient was used as the distance measure, and average linkage was used for hierarchical clustering. The whole-genome landscape of medulloblastoma subtypes : Nature : Nature Research 2017-07-18T04:00:00Z This assumption is easy to test for a particular sample of data with simple correlation coefficients. Introductory Business Statistics 2017-11-29T00:00:00Z Conclusion: There is insufficient evidence to conclude there is a significant linear relationship between x and y because the correlation coefficient is not significantly different from zero. High School Statistics 2020-03-27T00:00:00Z The correlation coefficient r measures the strength of the linear association between x and y. Introductory Statistics 2013-09-19T00:00:00Z Explain the difference between a positive and a negative correlation coefficient. Algebra and Trigonometry 2015-02-13T00:00:00Z In b and c, regression lines and their equations are shown: R, correlation coefficient. Exploiting non-covalent π interactions for catalyst design : Nature : Nature Research 2017-03-28T04:00:00Z The correlation coefficient for X and Y is known to be zero. Introductory Business Statistics 2017-11-29T00:00:00Z Using the table at the end of the chapter, determine whether r is significant and whether the line of best fit associated with each correlation coefficient can be used to predict a y value. High School Statistics 2020-03-27T00:00:00Z The sample data are used to compute r, the correlation coefficient for the sample. Introductory Statistics 2013-09-19T00:00:00Z For the following exercises, use each set of data to calculate the regression line using a calculator or other technology tool, and determine the correlation coefficient to 3 decimal places of accuracy. Algebra and Trigonometry 2015-02-13T00:00:00Z In b and c, regression lines and their equations are shown: R, correlation coefficient. Exploiting non-covalent π interactions for catalyst design : Nature : Nature Research 2017-03-28T04:00:00Z The most commonly used correlation coefficient indicates the degree to which variation in one variable is described by a straight line relation with another variable. Introductory Business Statistics 2017-11-29T00:00:00Z Examining the scatter plot and testing the significance of the correlation coefficient helps us determine whether it is appropriate to do this. High School Statistics 2020-03-27T00:00:00Z If we had data for the entire population, we could find the population correlation coefficient. Introductory Statistics 2013-09-19T00:00:00Z Based on the set of data given in Table 6, calculate the regression line using a calculator or other technology tool, and determine the correlation coefficient to three decimal places. Algebra and Trigonometry 2015-02-13T00:00:00Z Nerds want to know: what is the correlation coefficient?? Google Searches for Voter Registration Have Surged in Hispanic Areas 2016-09-29T04:00:00Z But because we have only sample data, we cannot calculate the population correlation coefficient. Introductory Business Statistics 2017-11-29T00:00:00Z As we did with the equation of the regression line and the correlation coefficient, we will use technology to calculate this standard deviation for us. High School Statistics 2020-03-27T00:00:00Z But because we have only have sample data, we cannot calculate the population correlation coefficient. Introductory Statistics 2013-09-19T00:00:00Z Based on the set of data given in Table 7, calculate the regression line using a calculator or other technology tool, and determine the correlation coefficient to three decimal places. Algebra and Trigonometry 2015-02-13T00:00:00Z Where appropriate, Spearman’s rank correlation coefficient was applied for correlation analysis. Culturing of ‘unculturable’ human microbiota reveals novel taxa and extensive sporulation : Nature : Nature Publishing Group 2016-05-03T04:00:00Z If the test concludes that the correlation coefficient is significantly different from zero, we say that the correlation coefficient is "significant." Introductory Business Statistics 2017-11-29T00:00:00Z Compute a new best-fit line and correlation coefficient using the 10 remaining points. High School Statistics 2020-03-27T00:00:00Z We decide this based on the sample correlation coefficient r and the sample size n. Introductory Statistics 2013-09-19T00:00:00Z What is the correlation coefficient for this model to three decimal places of accuracy? Algebra and Trigonometry 2015-02-13T00:00:00Z After constructing two 1 by 10 vectors for both allelic gene and allelic enhancer, we calculated the Pearson correlation coefficient between them. Chromatin architecture reorganization during stem cell differentiation : Nature : Nature Publishing Group 2015-02-17T05:00:00Z Conclusion: There is sufficient evidence to conclude that there is a significant linear relationship between X1 and X2 because the correlation coefficient is significantly different from zero. Introductory Business Statistics 2017-11-29T00:00:00Z The hypothesis test lets us decide whether the value of the population correlation coefficient ρ is close to zero or significantly different from zero. High School Statistics 2020-03-27T00:00:00Z If r is not between the positive and negative critical values, then the correlation coefficient is significant. Introductory Statistics 2013-09-19T00:00:00Z Based on the set of data given in Table 5, calculate the regression line using a calculator or other technology tool, and determine the correlation coefficient. Algebra and Trigonometry 2015-02-13T00:00:00Z The direction of the Eigen values is arbitrary, and therefore the direction was determined according to the correlation coefficient values with the PC1 values generated in the above section. Chromatin architecture reorganization during stem cell differentiation : Nature : Nature Publishing Group 2015-02-17T05:00:00Z Alternate Hypothesis Ha: The population correlation coefficient is significantly different from zero. Introductory Business Statistics 2017-11-29T00:00:00Z Conclusion: There is sufficient evidence to conclude there is a significant linear relationship between x and y because the correlation coefficient is significantly different from zero. High School Statistics 2020-03-27T00:00:00Z The test statistic t has the same sign as the correlation coefficient r. Introductory Statistics 2013-09-19T00:00:00Z What is the correlation coefficient for this model? Algebra and Trigonometry 2015-02-13T00:00:00Z The fraction of variance explained by each model was calculated as the Pearson correlation coefficient squared. Cell-of-origin chromatin organization shapes the mutational landscape of cancer : Nature : Nature Publishing Group 2015-02-17T05:00:00Z Perhaps no single statistic is more misused than the correlation coefficient. Introductory Business Statistics 2017-11-29T00:00:00Z Alternate hypothesis Ha: The population correlation coefficient is significantly different from zero. High School Statistics 2020-03-27T00:00:00Z State the least squares line and the correlation coefficient. Introductory Statistics 2013-09-19T00:00:00Z Most calculators and computer software can also provide us with the correlation coefficient, which is a measure of how closely the line fits the data. Algebra and Trigonometry 2015-02-13T00:00:00Z Dissimilarity was calculated as 1 – Pearson correlation coefficient, for all possible combinations of individual cancer genomes. Cell-of-origin chromatin organization shapes the mutational landscape of cancer : Nature : Nature Publishing Group 2015-02-17T05:00:00Z The correlation coefficient is, of course, innocent of this misinterpretation. Introductory Business Statistics 2017-11-29T00:00:00Z Conclusion: There is sufficient evidence to conclude there is a significant linear relationship between x and y because the correlation coefficient is significantly different from zero. High School Statistics 2020-03-27T00:00:00Z We examined the scatterplot and showed that the correlation coefficient is significant. Introductory Statistics 2013-09-19T00:00:00Z Using technology, the correlation coefficient was calculated to be 0.9965, suggesting a very strong increasing linear trend. Algebra and Trigonometry 2015-02-13T00:00:00Z After analyzing more than 40,000 responses, the company discovered a high correlation coefficient between organizational transparency and how happy employees were at their workplace. 4 Ways to Keep Employees Happy 2014-07-16T04:00:00Z Without a theory to test, this research tool is not much more helpful than the correlation coefficients we learned about earlier. Introductory Business Statistics 2017-11-29T00:00:00Z You also want to examine how the correlation coefficient, r, has changed. High School Statistics 2020-03-27T00:00:00Z The coefficient of determination r2, is equal to the square of the correlation coefficient. Introductory Statistics 2013-09-19T00:00:00Z Explain how to interpret the absolute value of a correlation coefficient. Algebra and Trigonometry 2015-02-13T00:00:00Z A simple correlation analysis over the past two years of daily activity produces a positive correlation coefficient of 0.935 - nearly one-for-one directional relationship. Alcoa looking less and less like a market bellwether 2013-04-09T17:12:34Z True or False: It is safer to interpret correlation coefficients as measures of association rather than causation because of the possibility of spurious correlation. Introductory Business Statistics 2017-11-29T00:00:00Z An outlier is only an influential point if it significantly impacts the slope of the least-squares regression line and the correlation coefficient, r. High School Statistics 2020-03-27T00:00:00Z When testing the significance of the correlation coefficient, what is the alternative hypothesis? Introductory Statistics 2013-09-19T00:00:00Z The correlation coefficient, indicates the degree of linear relationship between data. Algebra and Trigonometry 2015-02-13T00:00:00Z We took the median correlation coefficient of each bin as the rate of decay at a particular distance. Patterns of population epigenomic diversity 2013-03-13T18:21:41.540Z A correlation coefficient = 0 would indicate no linear association at all between these two variables. Introductory Business Statistics 2017-11-29T00:00:00Z Using the table of critical values for the correlation coefficient, with four degrees of freedom, the critical value is 0.811. High School Statistics 2020-03-27T00:00:00Z According to a study of online investors by Markus Glaser and Martin Weber, “The correlation coefficient between return estimates and realized returns is not distinguishable from zero.” Pinocchio traders with fantastic returns are lying to themselves 2013-02-24T00:55:00Z We calculated the correlation coefficient of the species richness values and repeated this 1000 times to obtain a distribution of correlation coefficients for various values of θ. [Technical Comment] Comment on “Global Correlations in Tropical Tree Species Richness and Abundance Reject Neutrality” 2012-06-28T18:25:14.470Z The correlation coefficient between the mean weight of adults and the amount of rainfall for the summer months was 0.68. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z The relation is not close, however, being that expressed by a correlation coefficient of .36½. The Psychology of Arithmetic 2012-03-31T02:00:28.817Z Using the table of critical values for the correlation coefficient, with seven gives degrees of freedom, the critical value is 0.666. High School Statistics 2020-03-27T00:00:00Z Instead, the correlation method indicates elevated regions of correlation coefficient well into the Atlantic Ocean. [Technical Comment] Comment on ?Phonemic Diversity Supports a Serial Founder Effect Model of Language Expansion from Africa? 2012-02-09T19:25:22.780Z We repeated this 100 times to obtain a distribution of correlation coefficients. [Technical Comment] Comment on “Global Correlations in Tropical Tree Species Richness and Abundance Reject Neutrality” 2012-06-28T18:25:14.470Z The companies offered to boost the so-called correlation coefficient at which access is allowed for some index-based products to more than 90 percent, from a previous limit of no more than 85 percent. Deutsche Boerse-NYSE Offer Further Concessions to Soothe EU 2011-12-13T18:13:09Z The thirteen with the most approved announcements of courses of study were in fact a little inferior in achievement to the other thirteen, and the correlation coefficients were slightly negative. The Psychology of Arithmetic 2012-03-31T02:00:28.817Z The correlation coefficient, r, measures the strength of the linear association between x and y. High School Statistics 2020-03-27T00:00:00Z I then looked at the correlation coefficients between a team’s prior performance and their performance in the upcoming quarter. The Fifth Down: What We Think We Learn as an N.F.L. Season Progresses 2011-12-06T12:03:23Z In ascertaining the relation between sunspots and earthquakes it would be well if we could employ the strict method of correlation coefficients. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z It will involve the very difficult determination of many correlation coefficients and constants—and for some of these our data are, it must be confessed, both scanty and unreliable. Spencer's Philosophy of Science The Herbert Spencer Lecture Delivered at the Museum 7 November, 1913 2011-09-25T02:00:15.883Z The social clustering that we demonstrated with our correlation coefficient is based in part on an impressive spatial clustering. Evolution, as helping hand 2011-09-19T19:15:00.250Z The coefficient of determination, r2, is equal to the square of the correlation coefficient. High School Statistics 2020-03-27T00:00:00Z The average correlation coefficient between the 500 companies and the index was 0.8268 yesterday, using 60 days of data, according to MF Global. Stocks Slide on Economy as Euro Strengthens on Bond Comments 2011-08-19T20:25:02Z Moreover, the nature of our data is such that even if there is a strong connection between solar changes and earth movements, we should not expect a large correlation coefficient. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The correlation coefficients of the teachers’ ranking of their students’ performance with the students’ rank on the state test revealed only strong positive correlation coefficients. Why giving standardized tests to young children is ?really dumb? 2011-07-19T09:00:00Z I should never be disposed to accept conclusions based on a "correlation coefficient" unless there were other converging evidence to support it. The Value of Money 2011-01-04T03:01:12.363Z He made major contributions to statistics, discovering the concept of correlation and calculating the first correlation coefficients. The Human Phenome Project 2010-06-09T01:05:00Z For instance, if we measured the relation between the number of berry pickers employed and the quantity of berries remaining unpicked, in a number of different fields we would get a negative correlation coefficient. The Social Direction of Evolution An Outline of the Science of Eugenics Such partial relationships are the kind for which correlation coefficients are most useful, for the size of the coefficients shows the relative importance of the various factors. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Meantime other investigators, principally followers of Karl Pearson in England, were working out correlation coefficients in other lines of research for hundreds of different traits. Applied Eugenics Now the only disease of importance representing the same age-curve as do the correlation coefficients is tuberculosis. Birth Control A Statement of Christian Doctrine against the Neo-Malthusians The precipitation of two preceding seasons, however, has some effect on the trees, as appears in the second line of Section A, where the correlation coefficient is +0.288, or 3.2 times the probable error. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The correlation coefficients for the sequoia growth and the rainfall at Jerusalem are given in Section A, Table 4. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z A correlation coefficient four times the probable error, which can always be determined by a formula well known to mathematicians, is generally considered to afford evidence of some kind of relation between two phenomena. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Section D of Table 3 shows the correlation coefficients between the rainfall along the railroad and the growth of the sequoias. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Perhaps the best way to determine these matters is the standard mathematical method of correlation coefficients. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Hence in comparing the growth of the huge sequoias with the rainfall we should expect a correlation coefficient high enough to be convincing, but decidedly below 1.00. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Applying the method of correlation coefficients to the annual rainfall of Sacramento and the growth of the sequoias from 1863 to 1910, we obtain the results shown in Table 3. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The seepage of the underground water is so slow that not until four years' rainfall is taken into account is the correlation coefficient more than four times the probable error. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z |
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