Descriptive Statistics Flashcards
1
Q
Measures of central tendency
A
An estimation of the average/ mid-point in the data.
2
Q
Mean
A
All the scores added up and divided by an nth number.
3
Q
Mode
A
The most common score in a set of data.
4
Q
Median
A
All the scores set out in order, and then the mid-point is chosen.
5
Q
Measure of dispersion
A
Shows the spread of data, whether it is tightly clustered or widely spread.
6
Q
Range
A
The difference between the lowest and the highest score.
7
Q
Standard deviation
A
Values that show the variation of results from the mean score.
8
Q
Mean: positives
A
- Takes into account the exact distance between all values of all the data
- Allow further statistical analysis
9
Q
Mean: negatives
A
- Produce number no participant scored
- Can be easily distorted
10
Q
Mode: positives
A
- Unaffected by extreme values
- Used when data is in categories
11
Q
Mode: negatives
A
- Not useful when there is multiple modes
12
Q
Median: positives
A
- Unaffected be extreme values
- Easy to calculate
13
Q
Median: negatives
A
- Exact values not reflected in median.
14
Q
Range: positives
A
- Easy to calculate
15
Q
Range: negatives
A
- Affected by extreme values
- Not take into account distribution of numbers
16
Q
Standard deviation: positives
A
- Precise measure of dispersion
- All values taken into account
17
Q
Standard deviation: negatives
A
- May hide extreme values
