You are given

n= 5

measurements:6, 2, 2, 7, 10.

(a) Calculate the sample mean,

x= 5.4

(b) Calculate the sample variance,s², using the formula given by the definition. s²=

(c) Find the sample standard deviation,s. (Round your answer to three decimal places.) s=

(d) Finds²andsusing the computing formula. (Round your answer forsto three decimal places.)

s2 =
s=

Compare the results with those found in parts (b) and (c).The values found in (b) and (c) are lower than the values found in part (d).The results are identical. The values found in (b) and (c) are higher than the values found in part (d).

If you scored at the94thpercentile on a placement test, how does your score compare with others? choose the correct answer below

The 94th percentile implies that 94% of all students scored below your score.

The 94th percentile implies that 94 students scored below your score.

The 94th percentile implies that 6% of all students scored below your score.

The 94th percentile implies that 6 students scored below your score.

The 94th percentile implies that your score was 94%, but does not provide information for comparison with other students.