Which of the choices is the standard deviation of the sample shown here?

19, 20, 21, 22, 23

A. 2.5

B. 21

C. square root of 2.5

D. 2

E. square root of 2

How do i solve an absolute prblem

Harriet bought 2kg of potatoes for $1.50 how much would it cost for 1 kg

Which is the ratio of the number of months that begin with the letter M to the total number of months in a year? 2 to 12 2 to 10 10 to 12 12 to 2

A playground has a shape of a rectangle, with two semi-circles on it's smaller sides as diameters added to its outside. If the sides of the rectangle are 38m and 28m, find the perimeter and the area of the playground Using the pi formulae

What expression is equivalent to 2 (3a+2b-7)

How do you convert 1.063636363 ... to a fraction?

Which unit would be most appropriate for measuring the length of a barn?

describe how you could change the problem by changing a unit in the problem. then solve the problem

How many ways can you arrange the word tiger letters

You donate 8 baseballs to a local baseball team. Your uncle donates 12 baseballs. If a total of 50 baseballs are donated, what is the probability that the first pitch of the season uses one of your baseballs or one of your uncle's baseballs?