Distributions (AQA A-Level Psychology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What shape does a normal distribution create when plotted?
What shape does a normal distribution create when plotted?
A symmetrical bell-shaped curve
In a normal distribution, where do the mean, median, and mode occur?
In a normal distribution, where do the mean, median, and mode occur?
At the same central point
In a normal distribution, what percentage of scores fall within one standard deviation of the mean?
In a normal distribution, what percentage of scores fall within one standard deviation of the mean?
68%
Which method is NOT mentioned for checking if data follows a normal distribution?
Which method is NOT mentioned for checking if data follows a normal distribution?
Conducting a t-test on the data
In a positive skewed distribution, where are most scores concentrated?
In a positive skewed distribution, where are most scores concentrated?
At the lower end
What causes a negative skewed distribution?
What causes a negative skewed distribution?
Unusually low extreme scores
How do the mean and median differ in skewed distributions?
How do the mean and median differ in skewed distributions?
Mean is pulled towards the skew direction
What does a bimodal distribution contain?
What does a bimodal distribution contain?
Two distinct peaks or modes
Which design is required to use the sign test?
Which design is required to use the sign test?
Repeated measures design
When is a sign test result considered statistically significant?
When is a sign test result considered statistically significant?
Observed value ≤ critical value