The correct question is
<span>Yuri computes the mean and standard deviation for the sample data set 12, 14, 9, and 21. he finds the mean is 14. his steps for finding the standard deviation are below. what is the first error he made in computing the standard deviation
</span>see the picture in the attached figure N 1

we know that
The formula for Sample Standard Deviation is indicated in the attached figure N2

in this problem
n=4 and Yuri had to divide in the formula by 3

therefore
the answer is Yuri divided by n instead of n -1

8 0

3 years ago

Read 2 more answers

A rectangular prism has a length of 20 in., a width of 2 in., and a height of 3 1/4 in. The prism is filled with cubes that have

GalinKa [24]

1st you would find the volume of the box. L×W×H (length times width time height) and you get 130 in. cubed. Then as a final step you would do 130 in. ÷ 1/4 = 520 cubes

7 0

4 years ago

In 1927,Charles Lendbergh had his first solo flight across the Atlantic Ocean.He flew 3,610 miles in 33.5 hours.If he flew about

Dmitry [639]

Answer: he fly 107.76 miles per hour for each hour

Step-by-step explanation:

Charles Lendbergh had his first solo flight across the Atlantic Ocean. He flew 3,610 miles in 33.5 hours.

Speed = distance /time

If he flew about the same number of miles each hour, it means that the number of miles that he flies in each hour would be

3610/33.5

= 107.76.miles per hour.

5 0

3 years ago

Plz help me :^(( tyy​

Plz help me :^(( tyy