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Exam 3: Measures of Central Tendency

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Question 21

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Calculate the median for the following scores: 8,10,2,12,13,7.

A) 10
B) 6.5
C) 9
D) 8

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Question 22

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For the following data,compare the mode,median,and mean.What will be the shape of the distribution? 7,16,23,41,4,72,7,91,12,31,31,66,2,44,85,4,50,99,41,31

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Mode = 31;Median = 3...

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Question 23

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The following data are taken from the U.S.Census Bureau and are the proportion of residents in U.S.states who lacked health insurance between 2001 and 2003.Suppose we added one additional state,Oregon,to the groups of states currently being considered.If the proportion of residents without health insurance in Oregon is .17,what is the value of the mean for this distribution?

SELECT ALL THAT APPLY. -With respect to the following table,which of the statements are not true?

In unimodal distributions,when the mode,the median,and the mean coincide or are almost identical,the distribution is

Consider the following distribution of scores: 7,7,9,10,12.Which score corresponds to the 50th percentile in this distribution?

The following data are taken from the U.S.Census Bureau and are the proportion of residents in U.S.states who lacked health insurance between 2001 and 2003.Suppose we added one additional state,Oregon,to the groups of states currently being considered.If the proportion of residents without health insurance in Oregon is .17,discuss whether this distribution is skewed.If so,what is the cause of the skew? If there is not a skew,explain why.

Calculate the median of the following distribution.

The mean can be calculated only for variables at the interval-ratio level of measurement.

Which measure of central tendency is the score that divides the distribution into two equal parts so that half of the cases are above and half are below it?

Distributions that have few extreme low values are described as

A bimodal distribution is one that has two

Identify the mode for the following distribution.

Consider the following distribution of scores: 7,7,9,10,12.What is the median for this distribution?

Which of the following measures of central tendency is sensitive to extreme scores in a distribution?

Calculate the value of the mean for the following distribution.

Calculate the mean for the following distribution.

What is the mode for the following distribution of scores: 7,7,9,10,12?

When the mean is lower than the median (or positioned to the left of the median),the distribution is positively skewed.

Consider the following distribution of crime rates per thousand persons from the U.S.Census Bureau (2008).Calculate the values of the mean and the median with and without Maine.How does dropping Maine change the values of the mean and the median?