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Flashcards in Chapter 2 Deck (15):
0

Frequency distribution

Organized tabulation of the number of the individuals located in each category on the scale of measurement

1

Symmetrical distribution

It is possible to draw a vertical line through the middle so the one side of the distribution is a mirror image of the other

2

Skewed distribution

The scores tend to pile up towards one end of the scale and taper off gradually at the other end

3

Tail

The section where the scores taper off in a distribution

4

Positively skewed

When the tail is on the right-hand side in a skewed distribution

5

Negatively skewed

If the tail points to the left of the skewed distribution

6

N represents what?

Number of raw scores. Can be found by adding up the frequency column

7

True or False:
An interval width should be used that yields about 10 intervals

True

8

True or false:
Intervals are listed in descending order, starting with the highest values at the top of the X column

True

9

True or false:
The established interval width should be relatively simple number, such as 2, 5, or 10.

True

10

True or False:
The value for N can be determined by counting the number of intervals in the X column

False

11

Histograms, modified histograms, and polygon graphs are used for what kind of scales.

Interval and ratio

12

Bar graphs are typically used for what kind of scales?

Nominal and ordinal

13

Which kind of graph is used for all 4 kinds of scales?

Population graphs

14

Variability

Range, diversity of scores on a graph