42 40 40 30 31 20 13 10 3 80 90 100 110 120 130 140 150 160 IQ Scores 60 70 (a) How many students were sampled? 200 (b) Determine the class width.10 (c) What is the first class?Blank 3 (d) Which class has the lowest frequency? Blank 4 (e)Which class has the highest frequency? Blank 5 (f) What is the relative frequency of an IQ between 120 and 129? Write in decimal form with 3 significant figures. Blank 6 (g) Describe the shape of the distribution (negatively skewed, positively skewed, bell-shaped). Blank 7 Frequency

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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42
40
40
30
31
20
13
10
3
60
80 90 100 110 120 130 140 150 160
70
IQ Scores
(a) How many students were sampled? 200
(b) Determine the class width.10
(c) What is the first class?Blank 3
(d) Which class has the lowest frequency? Blank 4
(e)Which class has the highest frequency? Blank 5
(f) What is the relative frequency of an IQ between 120 and 129? Write in decimal form with 3 significant figures. Blank 6
(g) Describe the shape of the distribution (negatively skewed, positively skewed, bell-shaped). Blank 7
Frequency
Transcribed Image Text:42 40 40 30 31 20 13 10 3 60 80 90 100 110 120 130 140 150 160 70 IQ Scores (a) How many students were sampled? 200 (b) Determine the class width.10 (c) What is the first class?Blank 3 (d) Which class has the lowest frequency? Blank 4 (e)Which class has the highest frequency? Blank 5 (f) What is the relative frequency of an IQ between 120 and 129? Write in decimal form with 3 significant figures. Blank 6 (g) Describe the shape of the distribution (negatively skewed, positively skewed, bell-shaped). Blank 7 Frequency
The following frequency histogram represents the IQ scores of a random sample of seventh grade students. IQs are
measured to the nearest whole number. The frequency of each class is labeled above each rectangle.
IQs of 7th Grade Students
70
60
58
50
42
40
40
31
30
20
13
10 -
60
70
80
90
100 110 120 130 140 150 160
IQ Scores
Frequency
Transcribed Image Text:The following frequency histogram represents the IQ scores of a random sample of seventh grade students. IQs are measured to the nearest whole number. The frequency of each class is labeled above each rectangle. IQs of 7th Grade Students 70 60 58 50 42 40 40 31 30 20 13 10 - 60 70 80 90 100 110 120 130 140 150 160 IQ Scores Frequency
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