Flashcards in 8- Formulas Deck (4)

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1

##
odd number of scores

-List from Lowest to Highest

- It’s the Middle score

Ex., (10, 11, 12, 13, 14. )____. = 12

Even number of scores:

-List from lowest to highest

- Add the middle 2 scores and divide by two

Example, 2, 3, 5, 8, 10, 12, = 5+8/2 = 6.5

### Median

2

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The distance between the Largest score and the “Smallest” score plus 1

A crude, unreliable measure of variability because:

-Does not consider ALL the scores in the distribution

Calculate:

Ex. 1; 1, 4, 5, 8, 9, 10

10 - 1 + 1 = 10

Ex. 2: 10, 15, 20, 25, 30, 35, 40

40- 10+ 1 = 31

### Range

3

##
The most commonly appearing data points

Can be more than one

### Mode

4