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Answer: In Exercises, find the mean of the data summarized

Chapter 3, Problem 31BSC

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QUESTION:

Problem 31BSC

In Exercises, find the mean of the data summarized in the given frequency distribution. Also, compare the computed means to the actual means obtained by using the original list of data values, which areasfoüows: 84.4.

Verbal IQ Score of Subject Exposed to Lead

Frequency

50–59

4

60–69

10

70–79

25

80–89

43

90–99

26

100–109

8

110–119

3

120-129

2

Questions & Answers

QUESTION:

Problem 31BSC

In Exercises, find the mean of the data summarized in the given frequency distribution. Also, compare the computed means to the actual means obtained by using the original list of data values, which areasfoüows: 84.4.

Verbal IQ Score of Subject Exposed to Lead

Frequency

50–59

4

60–69

10

70–79

25

80–89

43

90–99

26

100–109

8

110–119

3

120-129

2

ANSWER:

Answer :

Step 1 of 1 :

Given,  Verbal IQ score of subject exposed to lead and frequency

Verbal IQ score of subject exposed to lead

Frequency

50-59

4

60-69

10

70-79

25

80-89

43

90-99

26

100-109

8

110-119

3

120-129

2

The claim is to find the mean of the data and compare the computed means to the actual means obtained by using the original list of data values. That is 84.4

Where N = 4+10+25+43+26+8+3+2 = 121

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