9b) descriptive statistics Flashcards
1
Q
What is meant by a descriptive statistic?
A
The use of graphs, tables and summary statistics to identify trend in the data and summaries the data
2
Q
What is meant by a measure of central tendency?
A
Are summary statistics that represent the centre point or typical value of a dataset
3
Q
Why do psychologists find measures of central tendency useful?
A
It can indicate a typical score
4
Q
What is meant by the mean?
A
Average score across a set
5
Q
How do you calculate the mean?
A
Add up all the values and divide by the total number of them
6
Q
Which type of data is the mean used with?
A
Interval and ratio
7
Q
What are the pros of the mean?
A
-most sensitive
-takes all data into account
-more representative
8
Q
What are the cons of the mean?
A
-easily distorted by anomalous data
