11. Which of the following set of numbers has the highest Standard deviation?a) 1,0,1,0,1,0 b) -1, -1, -1, -1, -1, -1 c) 1,1,1,1,1,1 d) 1,1,0, -1,0, -1Tell me please how to slove this one

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venkateswarluraju

  • Feb 15th, 2007
 

just go through this example then u will clearly understand.Step 1. Calculate the mean average, : We have N = 4 because there are four data points: Replacing N with 4 This is the mean. Step 2. Calculate the standard deviation : Replacing N with 4 Replacing with 7 This is the standard deviation.

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smriti

  • Jul 1st, 2007
 

The choice which has a combination of the positive and negative signs is the right answer.

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rama24

  • Aug 13th, 2010
 

There is a mathematical formula for calculating standard deviation, but you don't need it for this question. StDev is a measurement of how much variation there is among different numbers in a series. Since choices b and c contain the same number 6 times, there is no variation. choice d also doesn't show much variation. Number 1 does vary from one point to the next, so it has variance, and therefore would have a higher StDev.


ans: choice (a)

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