Overview
Q1: If calculated |r| > critical value of r, then there is a linear correlation between the variables. T or F
Q2: An educator randomly selects 300 statistics students to check whether there is a relationship between a student passing the course and his or her number of absences. These results were reported:
No. of classes Missed | ||||
0-1 | 2-3 | 4 or more | Total | |
Passed Statistics Course | 30 | 50 | 100 | 180 |
Didn’t Pass Statistics Course | 10 | 30 | 80 | 120 |
Total | 40 | 80 | 180 | 300 |
What is the expected count for the number of students who were absent 2 or 3 times and who also passed the statistics course?
Q3 Which is the most appropriate chi-square test for the following survey design:
“You are told that the number of cracked M&M’s depends on color. To check this claim, you randomly select 100 M&M’s and sort by color and whether the M&M is cracked or uncracked.”
chi-square test of goodness of fit | ||
chi-square test of independence | ||
Both (a) & (b) | ||
Neither (a) nor (b) |
Q 4:If the slope of regression line be 3 and y-intercept is 4, then the value of y when x = –1 is
1 | ||
5 | ||
–1 | ||
7 |
Q5: In simple linear regression equation, the numbers of variables involved are:
3 | ||
0 | ||
2 | ||
1 |