Question

1. Birth Weights Listed below are the weights (grams) of newborn babies from Albany Medical Center Hospital. What value is obtained when those weights are added and the total is divided by the number of weights? (This result, called the mean, is discussed in Chapter 3.) What is notable about these values, and what does it tell us about how the weights were measured?

6. Standard Deviation One way to get a very rough approximation of the value of a standard deviation of sample data is to find the range, then divide it by 4. The range is the difference between the highest sample value and the lowest sample value. In using this approach, what value is obtained from the sample data listed in Exercise 1 “Birth Weights”?

For Chapter 2 through Chapter 11, the Cumulative Review Exercises include topics from preceding chapters. For this chapter, we present a few calculator warm-up exercises, with expressions similar to those found throughout this book. Use your calculator to find the indicated values. 1. Birth Weights Listed below are the weights (grams) of newborn babies from Albany Medical Center Hospital. What value is obtained when those weights are added and the total is divided by the number of weights? (This result, called the mean, is discussed in Chapter 3.) What is notable about these values, and what does it tell us about how the weights were measured? 3600 1700 4000 3900 3100 3800 2200 3000

Answer 1

average is 3162.5

=sum of all terms/ number of terms

= 3162.5

since every weight ends with 00

it means weights are rounded to 100 grams

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