10. AQA A-level psychology set 10

what are the advantages of qualitative data

provides rich, detailed insights and high validity.

what are the disadvantages of qualitative data

subjective, harder to analyse, and difficult to replicate.

what is the mean

average score calculated by adding all values and dividing by the number of values.

what is the median

the middle value when data is arranged in order.

what is the mode

most frequently occurring value in a data set.

what is the range

difference between the highest and lowest values.

what is standard deviation

measure of how spread out the data is from the mean.

what are the advantages of a mean

uses all data and is the most sensitive measure.

what are the disadvantages of a mean

easily distorted by extreme values.

what are the advantages of median

not affected by outliers.

what are the disadvantages of mean

does not consider magnitude of largest number

what are the advantages of mode

can be used with nominal data.

what are the disadvantages of mode

may not represent the data accurately.

what are the advantages of the range

quick and easy to calculate and gives a basic indication of data spread.

what are the disadvantages of the range

misleading because it only uses the highest and lowest values and ignores the rest of the data.

what are the advantages of standard deviation

more accurate because it uses all the data and shows how spread out scores are from the mean.

what are the disadvantages of standard deviation

more complex to calculate and harder to interpret than the range.

what is correlational data

the relationship between two variables but does not show cause and effect.

what is a bar chart

display of discrete or categorical data with separate bars.

how do you create a bar chart

label axes → draw equal-width bars → leave gaps between bars.