How to Design and Evaluate Research in Education, 5/e

Jack R. Fraenkel, San Francisco State University
Norman E. Wallen, San Francisco State University

Descriptive Statistics

True/False


1	The mean and median are commonly used to summarize quantitative data.
		A)	TRUE
		B)	FALSE


2	The median is the most frequent score in the distribution.
		A)	TRUE
		B)	FALSE


3	A parameter is an index for a characteristic of a sample.
		A)	TRUE
		B)	FALSE


4	Zip codes of shoppers at an appliance store is an example of categorical data.
		A)	TRUE
		B)	FALSE


5	Extreme scores heavily influence the median score.
		A)	TRUE
		B)	FALSE


6	A skewed distribution is asymmetrical.
		A)	TRUE
		B)	FALSE


7	A crossbreak table is used for analyzing the data obtained for two categorical variables.
		A)	TRUE
		B)	FALSE


8	A parameter is a numerical or graphic way of summarizing data from a population.
		A)	TRUE
		B)	FALSE


9	A graphic distribution of scores in which only a few individuals receive high scores is called a negatively skewed polygon.
		A)	TRUE
		B)	FALSE


10	A normal distribution is a theoretical distribution that is symmetrical, and in which a large proportion of the scores are concentrated at the middle of the distribution.
		A)	TRUE
		B)	FALSE

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