For the data set 7,5,10,11,12, the mean, x,is 9. what is the standard deviation

2.61

Step-by-step explanation:

Given data (x) :  7,5,10,11,12

Mean of the data :

Number of data values : n= 5

Now,

i.e.

Now, the standard deviation for this data is given by :-

connie < felicia < stew

step-by-step explanation:

stew:

we need to find the slope

m = (y2-y1)/ (x2-x1)

    = (2650-795)/(10-3)

    = 1855/7

265 words per minute

connie:

we need to find the slope

m = (y2-y1)/ (x2-x1)

we have two points (0,0) and (4,800)

m = (800-0)/(4-0)

  m = 800/4

    200 words per minute

felicia:

260 words per minute

200< 260 < 265

connie < felicia < stew

72 is the answer to this problem