Question

In a hearing test, subjects estimate the loudness (in decibels) of a sound, and the results...

In a hearing test, subjects estimate the loudness (in decibels) of a sound, and the results are (mean = 70): 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68.
What is the range?

22.40

324

6.76

18

4.73

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

Solution:
option D. 18

Explanation:-

The range is the difference between the highest and lowest values in the data set.

Ordering the data from least to greatest, we get:

62 67 68 68 68 68 70 71 73 75 80   

The lowest value is 62.

The highest value is 80.

The range = 80 - 62 = 18.

=>

The mode of the data set is 68.

Explanation

The mode of a set of data is the value in the set that occurs most often.

Ordering the data from least to greatest, we get:

62   67   68   68   68   68.   70   71   73   75   80   

We see that the mode is 68 .

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