Chapter 10 -- Describing Data Distributions

1			It isn't as important for the research analyst to know how statistical tools work as it is to know how to use them correctly.
			A)	TRUE
			B)	FALSE
2			For categorical data with a limited number of categories, frequency and percentage tables are the most common form of data description.
			A)	TRUE
			B)	FALSE
3			Percentage distributions are often less easily interpreted and of less interest than are the frequency distributions.
			A)	TRUE
			B)	FALSE
4			The arithmetic mean is the most common form of average used to indicate the most typical response.
			A)	TRUE
			B)	FALSE
5			A standard, normal distribution has skewness and kurtosis values of 1.
			A)	TRUE
			B)	FALSE
6			A normal curve has about 68 percent of its cases within plus or minus 1 standard deviation.
			A)	TRUE
			B)	FALSE
7			"Floor effects" result in a negatively skewed distribution.
			A)	TRUE
			B)	FALSE
8			Bimodal distributions usually mean there are two, distinct populations or groups whose distributions "overlap" one another.
			A)	TRUE
			B)	FALSE
9			A statistic is to a sample what a parameter is to a population.
			A)	TRUE
			B)	FALSE
10			The standard error of the estimate for a distribution is the same as the standard deviation of the distribution.
			A)	TRUE
			B)	FALSE