Inferential Statistics

Quiz by Amie Harris

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22 questions
• Q1
If I carried out a study using an unrelated measures design and nominal data, which statistical test would I use?
Wilcoxon
Mann Whitney
Chi square
Sign Test
30s
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• Q2
If I carried out a study were I used a correlation and both co-variables collected interval data, which statistical test would I use?
Pearsons
Binomial
Wilcoxon
Mann Whitney
30s
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• Q3
If I calculated an observed value of 3.22 and found a critical value of 4.89 for a Chi-Square test. Would it be significant or not?
significant
not significant
30s
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• Q4
How is degrees of freedom calculated for Chi-square
number of participants - 1
(number of rows - 1) x (number of columns -1)
(number of rows - 1) + (number of columns -1)
30s
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• Q5
If I calculated an observed value of 6.62 and found a critical value of 3.34 for a Wilcoxon test. Would it be significant or not?
significant
not significant
30s
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• Q6
If I calculated an observed value of 7.98 and found a critical value of 7.66 for a Spearman's rho test. Would it be significant or not?
not significant
significant
30s
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• Q7
How do you find the critical value for Mann Whitney U
you calculate degrees of freedom
number of participants - 1
you find the number of differences between conditions
number of participants for each condition
30s
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• Q8
How do you find the CRITICAL value for a Sign test?
you find the total number of participants
you calculate degrees of freedom
you find the number of participants that show a difference (ignore ppts with no difference)
30s
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• Q9
Which test am I? I test for a difference between two sets of scores. I am used where data is interval and I am used where the data is unrelated.
Wilcoxon
Pearson's r
Unrelated t test
Related t test
30s
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• Q10
Which test am I? I am a test for the difference between two sets of scores. I am used where data is interval and I am used where the data is related.
Pearson's r
Related t test
Spearman's rho
Chi-square
30s
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• Q11
Which test am I? I use a correlational design, I look for a relationship and I collect interval data for each co-variable.
Pearson's r
Unrelated t test
Mann Whitney
Sign test
30s
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Delete
• Q12
Which test am I? I look for a difference between sets of scores. I collect ordinal data and I use a repeated measures design.
Chi-square
Wilcoxon
Sign test
Unrelated t test
30s
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Delete
• Q13
Which test am I? I collect nominal data, I look for a difference and I use an unrelated design.
Sign Test
Chi-square
Spearmans
Pearson's r
30s
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• Q14
Students want to investigate the correlation between happiness scores and how many friends people have on Facebook. Identify the correct statistical test
Related t test
Spearman's rho
Wilcoxon
Sign test
30s
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• Q15
A researcher wants to investigate whether reaction times increase after a person is given a dose of caffeine equivalent to three cups of coffee. The participant’s base reaction times are compared with those 30 minutes after the caffeine intake. Identify the correct statistical test.
Related t test
Chi-square
Mann Whitney
Unrelated t test
30s
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• Q16
An observation is designed to test whether men or women are more likely to go through traffic signals when the signal is showing red, yellow or green.
Pearson's r
Chi-square
Wicoxon
Spearman's rho
30s
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• Q17
Sixth form students were asked to categorize themselves as either sociable or not sociable at the start and the end of their two-year courses.
Wilcoxon
Mann Whitney
Sign test
Unrelated t test
30s
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• Q18
How do you find the CALCULATED value of Sign test
You assign a pattern of + and - and find the total of the least frequent sign
You assign a pattern + and - and find the total of the most frequent sign
You find the total number of participants
30s
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• Q19
The observed value and calculated value mean the same thing
false
true
30s
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• Q20
How do you find the CRITICAL value for a Pearson's r test
Number of participants - 1
Total number of participants
Number of participants - 2
30s
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