QUESTION 1

1. The bars of a frequency distribution should

	a.	be touching each other (unless there is a category with zero frequency)
	b.	be centered on the score value
	c.	extend horizontally from the lower real limit of the score value to the upper real limit
	d.	all of these are true

QUESTION 2

1. The slope of a cumulative record shows

	a.	number of responses
	b.	rate of responding
	c.	changes in response rate
	d.	All of these are true

QUESTION 3

1. Which one of the following terms least belongs with the others?

	a.	Y-axis
	b.	X-axis
	c.	independent variable values
	d.	horizontal

QUESTION 4

1. The variance is

	a.	Based on the mean
	b.	Based on the mode
	c.	The square root of the standard deviation
	d.	Based on the median

QUESTION 5

1. Error bars can be misleading when

	a.	data are normally distributed
	b.	data are skewed
	c.	different groups have different amounts of variability
	d.	Both a and c are true.

QUESTION 6

1. Outliers are

	a.	impossible values
	b.	extreme but not impossible values
	c.	data that don't fit your theory
	d.	any of these

QUESTION 7

1. A curve that never changes direction is called a(n) ________ curve.

	a.	nonmonotonic
	b.	U-shaped
	c.	monotonic
	d.	inverted

QUESTION 8

1. A frequency distribution that has a longer tail on one end or the other is called a:

	a.	skewed distribution
	b.	bar graph
	c.	normal curve
	d.	scattergram

QUESTION 9

1. If the independent variable in an experiment is gender, it would be appropriate to use a _____ to represent the data

	a.	cumulative record
	b.	scattergram
	c.	bar graph
	d.	line graph

QUESTION 10

1. A ___________ shows the same information as a frequency table in a graphical format.

	a.	scattergram
	b.	rank-order distribution
	c.	ungrouped frequency distribution
	d.	frequency distribution

1 points

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