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Statistics: Informed Decisions Using Data | 4th Edition | ISBN: 9780321757272 | Authors: Michael Sullivan, III
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The following data represent the amount of time (in minutes) a random sample of eight

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QUESTION:

The following data represent the amount of time (in minutes) a random sample of eight students enrolled in Sullivans Intermediate Algebra course spent on the homework from Section 4.5, Factoring Polynomials. 48 88 57 109 111 93 71 63 Source: MyMathLab CHAPTER TEST (a) Determine the mean amount of time spent doing Section 4.5 homework. (b) Determine the median amount of time spent doing Section 4.5 homework. (c) Suppose the observation 109 minutes is incorrectly recorded as 1009 minutes. Recompute the mean and the median. What do you notice? What property of the median does this illustrate?

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QUESTION:

The following data represent the amount of time (in minutes) a random sample of eight students enrolled in Sullivans Intermediate Algebra course spent on the homework from Section 4.5, Factoring Polynomials. 48 88 57 109 111 93 71 63 Source: MyMathLab CHAPTER TEST (a) Determine the mean amount of time spent doing Section 4.5 homework. (b) Determine the median amount of time spent doing Section 4.5 homework. (c) Suppose the observation 109 minutes is incorrectly recorded as 1009 minutes. Recompute the mean and the median. What do you notice? What property of the median does this illustrate?

ANSWER:

Problem 1

The following data represent the amount of time (in minutes) a random sample of eight students enrolled in Sullivans Intermediate Algebra course spent on the homework from Section 4.5, Factoring Polynomials. 48 88 57 109 111 93 71 63 Source: MyMathLab CHAPTER TEST

(a) Determine the mean amount of time spent doing Section 4.5 homework.

(b) Determine the median amount of time spent doing Section 4.5 homework.

(c) Suppose the observation 109 minutes is incorrectly recorded as 1009 minutes. Recompute the mean and the median. What do you notice? What property of the median does this illustrate?

                                                            Step by Step Solution

Step 1 of 3

(a)

The arithmetic mean of a variable is computed by adding all the values of the variable in the data set and dividing by the number of observations, n.

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