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Author Question: The variance is a measure of dispersion or variability of a random variable. It is a weighted ... (Read 128 times)

mspears3

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on: Jun 24, 2018
The variance is a measure of dispersion or variability of a random variable. It is a weighted average of the
 a. square root of the deviations from the mean
  b. square root of the deviations from the median
  c. squared deviations from the median
  d. squared deviations from the mean

Question 2

The standard deviation is the
 a. variance squared
  b. square root of the sum of the deviations from the mean
  c. same as the expected value
  d. positive square root of the variance


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lou

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

D

Answer to Question 2

D


mspears3

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

kishoreddi

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Reply 3 on: Yesterday
Wow, this really help

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