Measures of Central Tendency Measures of Central Tendency
- Slides: 12
Measures of Central Tendency
Measures of Central Tendency Mean … the average score Median … the value that lies in the middle after ranking all the scores Mode … the most frequently occurring score
Measures of Central Tendency Which measure of Central Tendency should be used? The measure you choose should give you a good indication of the typical score in the sample or population.
Measures of Central Tendency Mean … the average score * is sensitive to extreme scores ex. 1 2 3 4 5 6 7 8 9 10 Mean = 5. 5 (median = 5. 5) ex. 1 2 3 4 5 6 7 8 9 20 Mean = 6. 5 (median = 5. 5) ex. 1 2 3 4 5 6 7 8 9 100 Mean = 14. 5 (median = 5. 5)
Measures of Central Tendency Median … is not sensitive to extreme scores … use it when you are unable to use the mean because of extreme scores
Measures of Central Tendency Mode … does not involve any calculation or ordering of data … use it when you have categories (e. g. occupation)
Variation or Spread of Distributions Range It compares the minimum score with the maximum score Max score – Min score = Range It is a crude indication of the spread of the scores because it does not tell us much about the shape of the distribution and how much the scores vary from the mean
Variation or Spread Measures that indicate the spread of scores: Range - the difference between the highest and lowest scores Ex. 2, 5, 9, 17, 8, 27, 1, 34 Range = 34 - 1 = 33
Example Find the mean, median, mode, and range from the following set of data values: 2, 4, 9, 13, 16, 22 Mean. Median. Mode. Range-
Example 2 Find the mean, median, mode, and range from the following set of data values: 60, 64, 69, 73, 76, 122 Mean. Median. Mode. Range* What does the value of 122 do to the data set?
Test Scores
Test Scores Go on Family Link and find your last 5 scores. Find the Mean:
- Measures of central tendency of ungrouped data
- Unit 6 review #2 - measures of central tendency
- Nxn 역행렬 알고리즘
- How to do percentile calculation
- Measure of central tendency grouped data
- Lower class boundary of modal class
- Measures of central tendency
- Central tendency symbols
- Measure of central tendency and dispersion
- Objective of central tendency
- Central tendency and variation
- Measures of central tendency
- Measures of central tendency notes