Quantitative Data Analysis
- Created by: JuliaMabiza
- Created on: 16-04-19 19:24
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- Descriptive Statistics
- Measures of Central Tendency
- Mean
- calculated by adding all the values and dividing by the number of data items
- Evaluation-most sensitive measure of central tendency as it takes into account exact distance between all values of data, but extreme score can give misleading impression of central tendency
- Median
- middle value in an ordered list
- Evaluation-not affected by extreme score, it is misleading when the scores are clustered in low and high groups
- Mode
- most common value in a set of data.
- Evaluation-it is not a useful way of describing data when there are several modes
- Mean
- Measures of Dispersion
- Range
- distance between the top and bottom values in a set of data
- Evaluation-easy to calculate, affected by extreme values
- Standard Deviation
- asses the spread of data around the mean
- Evaluation-more precise measure of dispersion because all values are taken into account, may hide some characteristics of the data set
- Range
- Measures of Central Tendency
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