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Author Question: Compute the third quartile for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22 a. 21.25 ... (Read 26 times)

pepyto

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on: Jun 24, 2018
Compute the third quartile for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22
 a. 21.25 b. 15.5
  c. 21.5 d. 11.75

Question 2

Compute the 50th percentile for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22
 a. 18.6 b. 13.3
  c. 15.5 d. 17.7


diesoon

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a
RATIONALE: Quartiles divide data into four parts, with each part containing approximately one-fourth, or 25 percent, of the observations. This can be calculated with the Excel function =QUARTILE.EXC(range,3) = 21.25.

Answer to Question 2

c
RATIONALE: A percentile is the value of a variable at which a specified (approximate) percentage of observations are below that value. 50th percentile = median = 15.5.


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