3 years ago

What is the first error he made in computing the standard deviation?

Mathematics

2 answers:

artcher [175]3 years ago

7 0

B.yuri divided by n instead of n-1

vivado [14]3 years ago

6 0

Answer:

Step-by-step explanation:

Given is a sample with 4 items as

12,9,14,21

Mean = average of 4 = 14

s is the square root of sample variance

Sample variance is the sum of squares divided by n-1

But Yuri divided by 4 = n instead of 3 = n-1

That is the only mistake he did and all other steps are right.

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