Data Analysis Basics
Test your understanding about data analysis tools like descriptive, inferential, and bivariate
If Pearson’s correlation coefficient between stress level and workload is .8, how much variance in stress level is not accounted for by workload?
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When the correlation coefficient, r, is close to one:
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Which of the following BEST differentiates data analysis from interpretation?
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R2 is known as the:
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A correlation of .7 was found between time spent studying and percentage on an exam. What is the proportion of variance in exam scores that can be explained by time spent studying?
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Ordinal level data are characterized by:
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The number of Indians travelling to work by car today is an example of
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The intercept in linear regression represents:
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In analysing categorical data, the following graphical device is not appropriate
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A summary measure that is computed from only a sample of the population is called
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The process of using sample statistics to draw conclusions about population parameters is called
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