Complete the chart to find the mean,variance,and standard deviation. 45 340 400 825

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roundadworthy roundadworthy · Answer 1 · 2020-02-03T22:59:51+01:00

Answer:

A. Mean = 402.5

B. Variance = 77,556.25

C. Standard Deviation = 278.49

Step-by-step explanation:

Let's calculate the mean, variance and standard deviation of the set of numbers given:

A. Mean = (45 + 340 + 400 + 825)/4 = 1,610/4 = 402.5

B. Variance [(45 - 402.5)² + (340 - 402.5)² + (400 - 402.5)² + (825 - 402.5)²]/4 = [(127,806.25 + 3,906.25 +6.25 + 178,506.25/4 = 77,556.25

C. Standard Deviation = √Variance = √77,556.25 = 278.49

mixtreality mixtreality · Answer 2 · 2021-04-07T17:52:13+02:00

Answer:

1. 45⠀= -357.5⠀= 127,806.3⠀mean = 402.5

2. 340⠀= -62.5⠀ = 3,906.3⠀variance = 77,556.3

3. 400⠀= -2.5⠀= 6.3⠀deviation = 278.5

4. 825⠀= 422.5⠀= 178, 506⠀n = 4

Σ X = 1,610⠀X = 402.5⠀Σ (X - X)2 = 310,225.2

Step-by-step explanation:

:)

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