DSRT 734 University of the Cumberlands True False Statement Statistics Exam Indicate whether the statement is True or False For a 2 x 3 chi square test, t

DSRT 734 University of the Cumberlands True False Statement Statistics Exam 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?

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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 Final practice test
Indicate whether the statement is True or False
1. For a 2 x 3 chi square test, the number of degrees of freedom is 2.
2. Nonparametric statistical test do not require the assumptions about the populations that are
required of parametric tests.
3. A distribution cannot have two modes.
Select the correct answer
4. A distribution curve with two peaks is called
a. Normal
b. Rectangular
c. Bifrontal
d. bimodal
5. 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:
a. Are independent
b. Are not independent
c. Both are correct
d. Neither are correct
6. If you conducted a Spearman’s rs with 10 pairs and an rs value of .70, then the following is true:
a. It is significant, p < .01. b. It is significant, p < .05. c. It is not significant, p > .05.
d. None of the above.
Select the correct test, apply the test, and communicate the answer according to the handbook.
7. 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.
8. A leader wanted to know if there was a difference in employee attendance rates based on the
shift that employees work.
First
shift
Here is the data:
Second
Third
shift
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.
9. A researcher wanted to know if two educator created assessments assessed the same skills.
Students were given both assessments. The data are below:
Assessment
Assessment
A
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
10. With the same data from question #9, what if the researcher wanted to know if the students
performed differently on two assessments?

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