# Statistics

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1. For the following exercise, complete the following by using the data sets below that provides the ages of the first seven presidents:

a. Find the mean, median, and range for each of the two data sets.

b. Find the standard deviation using the rule of thumb for each of the data sets (please see Chapter 4, Section 4.3 of the text).

c. Compare the two sets and describe what you discover.

The following data sets shows the ages of the first seven presidents (President Washington through President Jackson) and the seven most recent presidents including President Obama. Age is given at time of inauguration.

First 7: 57 61 57 57 58 57 61

Second 7: 61 52 69 64 46 54 47

2. A data set consists of a set of numerical values. Please indicate by stating yes or no for each of the following statements whether or not it could be correct.

a. There is no mode.
b. There are two modes.
c. There are three modes.

3. Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different.

a. The 29th percentile is greater than the 30th percentile.
b. The median is greater than the first quartile.
c. The third quartile is greater than the first quartile.
d. The mean is equal to the median.
e. The range is zero.

• Statistics -

First, we do not do your work for you. Second, we do not have your text. You will learn more if you calculate the mean, median, mode and standard deviations yourself.

However, I will tell you that the answer to 3 is b and c.

• Statistics -

the answer to 2 is a

• Statistics -

discover.

The following data sets shows the ages of the first seven presidents (President Washington through President Jackson) and the seven most recent presidents including President Obama. Age is given at time of inauguration.

First 7: 57 61 57 57 58 57 61

Second 7: 61 52 69 64 46 54 47

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