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Descriptive and inferential statistics quiz
Descriptive and inferential statistics quiz
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A level linear Psychology data analysis test
Flashcards
30 cards
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Questions
30
Answers
1
In this formula, what does the 'n' stand for?
Number of participants in one condition
Negative correlation
No scores
Number of participants in both conditions combined
2
Would a probability level of p<0.05 be significant?
Yes
No
Probably not
Possibly maybe
3
If you use a p<0.01 level of significance you are more likely to make a…
Significant result
Type 1 error
Type 2 error
False positive
4
What is the median of the following scores: 10, 6, 7, 2, 5?
10
5
7
6
5
20% of a psychology class fail the exam, what is this as a fraction?
1/20th
2/5ths
1/5th
2/10ths
6
Which type of data is the mode most likely to be used with?
Nominal
Ratio
Qualitative
Ordinal
7
When would you NOT use the mean as a measure of central tendency?
When you had a normal distribution
When you wanted to find the average
When you had a skewed distribution
When you had extreme scores
8
What are the requirements of a parametric test?
Interval/ratio data
A big difference in standard deviation scores
Normal distribution of scores
Nominal data
9
In p<0.05 what does the p stand for?
Partiality
Primary data
Probability
Possibility
10
Data that involves participant's feelings and thoughts and is in written form is called...
Primary data
Qualitative data
Secondary data
Quantitative data
11
Data collected from Government statistics and newspapers is called...
Primary data
Secondary data
Quantitative data
Qualitative data
12
What is the mean of the following scores? 5,10,5,8,2
5
3
10
6
13
Would a probability level of p>0.05 be significant?
Possibly
Probably
Yes
No
14
Which non-parametric statistical test would you use with a correlation?
Mann-Whitney U test
Wilcoxon signed ranks test
Sign test (Binomial)
Spearman's rho
15
What type of correlation does this graph show?
Positive
A significant difference
No correlation
Negative
16
What type of distribution is this?
A normal distribution
A positively skewed distribution
A negatively skewed distribution
A positive correlation
17
What is the range of the following scores? 2, 4, 5, 8, 10, 15, 25, 29
25
4
29
27
18
What statistical test would you use with ordinal data and independent measures design?
Spearman's rho
Chi-square test
Mann-Whitney U test
Wilcoxon signed ranks
19
Which statistical tests use nominal data?
Mann-Whitney U test
Sign test (Binomial)
Spearman's rho test
Chi-square test
20
Which of the following is NOT a requirement of a parametric test?
Normal distribution of scores
Interval/ ratio data
Similar variances
Nominal data
21
A researcher collects scores out of 20 from participants on a memory test. This is....
Ratio data
Ordinal data
Interval data
Nominal data
22
0.05 is what as a percentage?
50%
5%
0.5%
25%
23
If you had a matched pairs design and ordinal data, what test would you use?
Spearman's rho test
Wilcoxon signed ranks test
Mann-Whitney U test
Chi-square test
24
What is standard deviation?
The square root of the variance
The average
How scores vary from the mean
The range
25
A researcher records how many participants have blue, green and brown eyes. This is..
Interval data
Ordinal data
Nominal data
Ratio data
26
A researcher records the reaction time of participant's. This is.....
Nominal data
Ordinal data
Ratio data
Interval data
27
Which parametric statistical test would be used with ratio data and a correlation?
Spearman's rho
Pearson's Product Moment test
Binomial Sign test
Related t-test
28
What type of graph is this?
Scatergraph
Bar chart
Frequency polygon
Pie chart
29
What type of graph is this?
Bar chart
Histogram
Scattergraph
Frequency polygon (line graph)
30
If your probability level is p<0.05 which hypothesis should you accept?
Dispositional hypothesis
Alternate hypothesis
Negative hypothesis
Null hypothesis
