Question

20) Which of the following measures of central tendency will always change if a single value in the data changes?

A) Mean

B) Median

C) Mode

D) All of these

2) She wants to determine if there is a positive linear correlation between study hours and final paper score for the students still left in his class at the end of the semester. He randomly selected ten students from all his statistics classes and determined their number of study hours per week and their final paper grade.

The sample results were: Final. paper: 96 82 86 89 91 92 85 87 92 85

Study Hours: 21 14 17 16 13 20 14 10 17 16 ( ∑X = 158 ∑X² = 2592 )

State the Independent variable( IV), the dependent variable (DV) , and the sample correlation coefficient value?

Answer 1

20.A) mean

2) Independent variable( IV)= study hours= x

the dependent variable (DV) = final paper score= y

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