Deck 3: Analysing Data for Psychological Research

Question 1

If I wanted to know the middle data point from my dataset, what type of measure of central tendency would this be?

A) Mean
B) Median
C) Mode
D) Standard deviation

Answer 1

B

Question 2

What is meant by the term 'standard deviation'?

A) It refers to how frequently a particular score is present in a dataset.
B) It refers to the number of responses that lie 25% above and below the mean of the dataset.
C) It refers to the maximum range of scores in the dataset.
D) It refers to the amount of variation in the scores around the mean.

Answer 2

D

Question 3

Which of the following is a type I error?

A) When you find an effect in your sample that exists in the real-world population
B) When you do not find an effect in your sample that doesn't exist in the real-world population
C) When you find an effect in your sample that doesn't exist in the real-world population
D) When you do not find an effect in your sample that does exist in the real-world population

Answer 3

C

Question 4

In Psychology, what is the commonly accepted alpha level to determine whether an effect is significant?

A) 050
B) .005
C) .010
D) .500

Question 5

In an experiment, what can affect the p value of our inferential statistics?

A) The means of the group scores
B) The sample size
C) All of the other options
D) The standard deviation of the group scores

Question 6

Which one of the following is not an assumption of a parametric analysis?

A) Data is normally distributed.
B) There is the same number of participants in each group.
C) The data collected is either interval or ratio data.
D) The variance in the dataset is similar between all conditions (homogeneity of variance).

Question 7

What is meant by a positively skewed dataset?

A) The distribution of scores shows a tail of extreme scores at the higher end of the dataset.
B) The distribution of scores shows a tail of extreme scores at the lower end of the dataset.
C) The distribution of scores is relatively flat across the entire dataset.
D) The distribution of scores is heavily concentrated around the centre of the dataset.

Question 8

What does a p value of .043 indicate?

A) The finding is significant, and there is 4.3% chance of having made a type II error.
B) The finding is not significant, and there is a 4.3% chance of having made a type I error.
C) The finding is not significant, and there is a 4.3% chance of having made a type II error.
D) The finding is significant, and there is a 4.3% chance of having made a type I error.

Question 9

In an ideal dataset you would want your data to have…

A) a large amount of both within group and between group variance.
B) a large amount of between group variance, and little within group variance.
C) a large amount of within group variance, and little between group variance.
D) a small amount of both within group and between group variance.