The data (1.5.8.5.1) represent a random sample of the number of days absent from school for five students at Monta Vista High. Find the
mean and standard deviation of the data.
Select one
a. mean = 4; standard deviation = 2.68
b. mean = 4: standard deviation = 7.2
c. mean = 20; standard deviation = 7.6
d. mean = 4.4; standard deviation = 2.76

And based on this the best answer would be:

a. mean = 4; standard deviation = 2.68

Step-by-step explanation:

For this case we have the following data given:

1,5,8,5,1

We can find the sample mean with the following formula:

And replacing we got:

And for the deviation (assuming that the correct approximation is the deviation for a population) we can calculate the deviation with the following formula:

And replacing we got:

And based on this the best answer would be:

a. mean = 4; standard deviation = 2.68

i think it would be 42cm

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5