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Data Groups - Finite Math - Quiz, Exercises of Mathematical Methods for Numerical Analysis and Optimization

Main points of this past exam are: Data Groups, Relative Frequency, Histogram, Average, Standard Deviation, Heights, Distributed

Typology: Exercises

2012/2013

Uploaded on 03/31/2013

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MA 110-02
§4.1 4.4 Quiz #5 score
Name:
24 July 2001
1. Draw a relative frequency histogram for the
dataset {1.7, 1.3, 2.9, 5.1, 9.2, 4.1, 6.4, 4.9,
6.1, 2.5, 7.7, 6.6, 2.2, 3.7, 5.9, 5.5, 9.4, 9.9}.
Use 5 data groups each of width 2 starting
at 0 (so that 0 x<2 describes the first
category). (6 points)
12345678910
2. Jill has four friends aged 12, 11, 9, and 13. Find the average (Mean) and standard deviation
of Jill’s friends ages. (6 points)
3. In a group of students, assume their heights are normally distributed with a mean of 67
inches and a standard deviation of 3 inches. Find the probability that a person’s height
is les than 64 inches. (6 points)

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MA 110-

Quiz

score

Name:

24 July 2001

  1. Draw a relative frequency histogram for the dataset {1.7, 1.3, 2.9, 5.1, 9.2, 4.1, 6.4, 4.9, 6.1, 2.5, 7.7, 6.6, 2.2, 3.7, 5.9, 5.5, 9.4, 9.9}. Use 5 data groups each of width 2 starting at 0 (so that 0 ≤ x < 2 describes the first category). (6 points)
  1. Jill has four friends aged 12, 11, 9, and 13. Find the average (Mean) and standard deviation of Jill’s friends ages. (6 points)
  2. In a group of students, assume their heights are normally distributed with a mean of 67 inches and a standard deviation of 3 inches. Find the probability that a person’s height is les than 64 inches. (6 points)