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Author Question: If we know that a set of test scores has a mean of 75 and a standard deviation of 8, we would ... (Read 39 times)

olgavictoria

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on: Jun 20, 2018
If we know that a set of test scores has a mean of 75 and a standard deviation of 8, we would conclude that
 
  a. the average deviation from the mean is about 8 points.
  b. the average person will have a score of 75 + 8 = 83.
  c. more people are above 75 than below it.
  d. You can't tell anything about how scores lie relative to the mean.

Question 2

The standard deviation for the numbers 8, 9, and 10 is
 
  a. -3.0
  b. 0.0
  c. .67
  d. 1.0


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Natalie4ever

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Reply #1 on: Jun 20, 2018
Answer to Question 1

A

Answer to Question 2

D


olgavictoria

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Reply 2 on: Jun 20, 2018
Excellent

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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