The marks of 7 math students were recorded. Find the sample standard deviation. 61, 64, 65, 72, 78, 81, 86 Math Mark (x) (x-x)² Step 1) Find the sample mean x = Step 2) Make a table and calculate (x-x)² Step 3) Add up all the values you just found. Step 4) Plug this into the standard deviation formula. Σ(x-x) =

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Author:Amos Gilat
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Question 1
The marks of 7 math students were recorded. Find the sample standard deviation.
61, 64, 65, 72, 78, 81, 86
(x - x)²
Step 1) Find the sample mean
X =
Step 2) Make a table and calculate (x-x)²
Step 3) Add up all the values you just found.
Step 4) Plug this into the standard deviation formula.
Math
Mark (x)
Σ(x-x)² =
Transcribed Image Text:Question 1 The marks of 7 math students were recorded. Find the sample standard deviation. 61, 64, 65, 72, 78, 81, 86 (x - x)² Step 1) Find the sample mean X = Step 2) Make a table and calculate (x-x)² Step 3) Add up all the values you just found. Step 4) Plug this into the standard deviation formula. Math Mark (x) Σ(x-x)² =
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