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