Exercise 7 Page 448

The first step in finding the mean of a data set is counting the number of values.

1126 ^(∘)F

Practice makes perfect

The mean of a data set is calculated by finding the sum of all values in the set and then dividing by the number of values in the set.

Boiling Points (^(∘)F)	Arsenic	Cadmium	Mercury	Phosphorus	Potassium	Sodium
Boiling Points (^(∘)F)	1117	1409	675	536	1398	1621

We can see that there are 6 values in the given data set. Let's add up the values and then divide the sum by 6. The result will be the mean!

Mean=Sum of values/Number of values

Substitute values

Mean=1117+1409+675+536+1398+1621/6

Add terms

Mean=6756/6

Calculate quotient

Mean=1126

The mean of the data set is 1126 ^(∘) F.

1 Introduction to Statistics p.447

2 Mean p.448

3 Measures of Center p.448

4 Measures of Variation p.449

5 Mean Absolute Deviation p.449

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