The formula for the standard deviation of a sample is: s equals square root of fraction numerator 1 over denominator n minus 1 end fraction sum from i equals 1 to n of (X subscript i minus X with bar on top )squared end root Select the true statement for the following data set that has a mean of
9, 3, 7, 8, 8, 8, 9, 10, 10, 13, 14
Answer choices are rounded to the hundredths place.
A. The variance is 8.50 and the standard deviation is 3.09.
B. The variance is 3.09 and the standard deviation is 9.56.
C. The variance is 9.56 and the standard deviation is 8.50.
D. The variance is 9.56 and the standard deviation is 3.09.

answer: i believe it’s 245.04

step-by-step explanation:

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day