Values ( X ) | Σ ( Xi- X̅ )2 | |
21 | 121 | |
10 | 0 | |
3 | 49 | |
7 | 9 | |
9 | 1 | |
Total | 50 | 180 |
Mean X̅ = Σ Xi / n
X̅ = 50 / 5 = 10
Sample variance S2= (Xi - X̅ )2 / n - 1 = ( 180 / 5 -1 ) = 45
Sample Standard deviation SX = √ ( (Xi - X̅
)2 / n - 1 )
SX = √ ( 180 / 5 -1 ) = 6.708204 ≈
6.7
0 24 3.2.5 Find the sample variance and standard deviation 21, 103,7,92 Choose the correct answer...
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OHHOHOHUPIIIIHIVUT Score: 0 of 1 pt 8 of 2 3.2.7 Find the population variance and standard deviation 4,7 11, 13, 15 Choose the correct answer below. Fill in the answer box to complete your choice (Type an integer or a decimal Do not round) OA. 2 OB. 52 rar Click to select and enter your answers) and then click Check Answer ans 1 part remaining Copyright 2019 Pearson Education Inc. All here to search
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