DSRT 734 University of the Cumberlands True False Statement Statistics Exam
Description
Indicate whether the statement is True or False
- For a 2 x 3 chi square test, the number of degrees of freedom is 2.
- Nonparametric statistical test do not require the assumptions about the populations that are required of parametric tests.
- A distribution cannot have two modes.
- A distribution curve with two peaks is called
- Normal
- Rectangular
- Bifrontal
- bimodal
- A friend brings you data that can be used to establish the independence of two variables. You run an analysis on the data and find a chi square value larger than the tabled value. Your analysis shows that the two variables:
- Are independent
- Are not independent
- Both are correct
- Neither are correct
- If you conducted a Spearman’s rs with 10 pairs and an rs value of .70, then the following is true:
- It is significant, p < .01.
- It is significant, p < .05.
- It is not significant, p > .05.
- None of the above.
- What effect does noise pollution have on helpfulness? A person with a cast on one arm gets out a car and drops an armload of books in front of pedestrians. Will the pedestrians help? Maybe. Sometimes there was a loud gasoline lawn mower operating nearby when the books were dropped and sometimes the mower was not operating. Of the 25 pedestrians who could have helped when the mower was operating, four did so. Of the 25 who could have helped when the mower was quiet, 20 did so. Of the 25 who could have helped when the mower was operating, four did so.
- A leader wanted to know if there was a difference in employee attendance rates based on the shift that employees work.
- A researcher wanted to know if two educator created assessments assessed the same skills. Students were given both assessments. The data are below:
- With the same data from question #9, what if the researcher wanted to know if the students performed differently on two assessments?
Select the correct answer
Select the correct test, apply the test, and communicate the answer according to the handbook.
Here is the data:
|
First shift |
Second shift |
Third shift |
|
0 |
2 |
3 |
|
1 |
1 |
2 |
|
1 |
2 |
4 |
|
1 |
1 |
1 |
|
1 |
1 |
3 |
|
0 |
1 |
2 |
|
1 |
2 |
4 |
|
2 |
1 |
|
|
1 |
3 |
Perform the test, report the results, and complete any additional tests.
|
Assessment A |
Assessment B |
|
|
Student 1 |
10 |
11 |
|
Student 2 |
10 |
12 |
|
Student 3 |
10 |
13 |
|
Student 4 |
10 |
14 |
|
Student 5 |
20 |
19 |
|
Student 6 |
15 |
18 |
|
Student 7 |
25 |
18 |
|
Student 8 |
25 |
18 |
|
Student 9 |
25 |
18 |
|
Student 10 |
14 |
18 |
|
Student 11 |
14 |
18 |
|
Student 12 |
14 |
18 |
