WorksheetsPsychology IA1 Data Test Prep
Total questions: 42
Worksheet time: 34mins
In which type of data are steps in the scale evenly placed but zero does not mean zero?
Nominal
Ordinal
Interval
Ratio
What is an example of interval data?
Hair color
Religion
Temperature
Time
Which measure of central tendency is used for nominal data?
Mean
Median
Mode
Standard deviation
What is the measure of dispersion for ordinal data?
NA
Inter-quartile range
Standard deviation
Mode
What does a p-value indicate?
The probability that any difference is due to chance
The mean of the data
The mode of the data
The median of the data
Which test is typically used for ordinal data to test whether two means are equal or not?
T-test
Mann-Whitney U
Wilcoxen signed-rank-test
ANOVA
Which test compares two sets of scores from the same set of participants when the data is not normally distributed?
T-test
Mann-Whitney U
Wilcoxen signed-rank-test
Chi-square test
Which test does not require the assumption of normal distribution?
T-test
Mann-Whitney U
ANOVA
Z-test
What is an example of ratio data?
Temperature in Celsius
Height in centimeters
Movie genres
Customer satisfaction ratings
Match the following
Mean
The average of a set of numbers
Median
The middle number in a sorted list of numbers
Mode
The number that appears most frequently in a set of numbers
Range
The difference between the highest and lowest numbers in a set
Standard Deviation
A measure of the amount of variation or dispersion of a set of values
Match the following
Nominal
Categories with no inherent order
Ordinal
Categories with a clear order or rank
Interval
Equal intervals between categories
Ratio
Equal intervals and zero means zero
The median of the numbers 34, 32, 12, 65, and 45 is...
34
32
12
65
Find the mean of 11, 12, 23, 14, and 15
14
15
16
23
Which is the appropriate measure of central tendency?
Justification: Nominal Data
Mean
Median
Mode
Which is the appropriate measure of central tendency?
Justification: Ordinal Data
Mean
Median
Mode
Which is the appropriate measure of central tendency?
Justification: Interval Data (no outliers)
Mean
Median
Mode
Which is the appropriate measure of central tendency?
Justification: Ratio Data (no outliers)
Mean
Median
Mode
Label the columns:
Parametric
Non-Parametric
Select the correct statistical test:
Correlational Study with Parametric Data: (a)
Select the correct statistical test:
Experimental Study with Repeated Measures and Parametric Data: (a)
Select the correct statistical test:
Experimental Study with Matched participants and Parametric Data: (a)
Select the correct statistical test:
Correlational Study with Non-Parametric Data: (a)
Select the correct statistical test:
Experimental Study with Independant Groups and Non-Parametric Data: (a)
Select the correct statistical test:
Experimental Study with Matched participants and Non-Parametric Data: (a)
Select the correct statistical test:
Experimental Study with Matched participants and Non-Parametric Data: (a)
Calculate the median of the following numbers: 7, 9, 3, 5, 12
5
7
9
12
Suppose the P-value for a hypothesis test is 0.0304. Using a = 0.05, what is the appropriate conclusion?
a) reject the null, the probability of getting results like this given the null is true is 3.04% which is less than 5%.
b) reject the alternative, the probability of getting results like this given the alternative is true is 3.04% which is less than 5%.
c) Accept the null, a 3.04% chance is really not that bad.
d) Fail to reject the alternative but still don't accept the null.
A T-test is used to test for a difference in weight between mice fed on 2 different diets. The p-value calculated is 0.3, this means that:
The null hypothesis should be accepted as p is greater than 0.05 : there is no significant difference between groups,
The null hypothesis should be rejected as p is greater than 0.05 : there is a significant difference between groups
There is a clear correlation between the diet and the size
The alternative hypothesis should be accepted as p is less than 5%
A T-test was used to test for a difference in blood pressure before and after drinking chicha morada. The p-value calculated is 0.01, this means that:
The null hypothesis should be accepted as p is greater than 0.05 : there is no significant difference between groups,
The null hypothesis should be rejected as p is less than 0.05 : there is a significant difference between groups
There is a clear correlation between the diet and the size
The alternative hypothesis should be rejected as p is less than 5%
p = 0.01
The two groups are statistically significantly different
The two groups are NOT statistically significantly different
r = -0.3 is considered to have...
moderate negative correlation
weak negative correlation
no correlation
strong negative correlation
If r=0, there is a strong correlation.
True
False
Given the following Scatter Plot, select the option that is most likely the r value.
r=−.1
r=−.981
r=.92
r=.765
Given the following Scatter Plot, select the option that is most likely the r value.
r=−.45
r=−.981
r=.728
r=.12
What is the value of the interquartile range?
115
118
124
9
3
Find the IQR (interquartile range) for the following data.
1, 5, 7, 9, 10, 11, 13, 15, 19
(a)
What is the median shown by the data in the graph?
4
4.5
5
3
3.5
