Chapter 2

Question 0

Symmetrical distribution

Answer 0

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

Question 1

Frequency distribution

Answer 1

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

Question 2

Skewed distribution

Answer 2

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

Question 3

Tail

Answer 3

The section where the scores taper off in a distribution

Question 4

Positively skewed

Answer 4

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

Question 5

Negatively skewed

Answer 5

If the tail points to the left of the skewed distribution

Question 6

N represents what?

Answer 6

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

Question 7

True or False:

An interval width should be used that yields about 10 intervals

Answer 7

True

Question 8

True or false:

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

Answer 8

True

Question 9

True or false:

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

Answer 9

True

Question 10

True or False:

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

Answer 10

False

Question 11

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

Answer 11

Interval and ratio

Question 12

Bar graphs are typically used for what kind of scales?

Answer 12

Nominal and ordinal

Question 13

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

Answer 13

Population graphs

Question 14

Variability

Answer 14

Range, diversity of scores on a graph