Christine is currently taking a college astronomy class and the instructor often gives quizzes. on the past seven quizzes, christine got the scores shown below. find the standard deviation, rounding to one more decimal place than is present in the original data. 50 15 31 27 11 42 71

The answer is 20.9 when rounded it is 21

19.4

Step-by-step explanation:

Given data,

50,    15,       31,        27,         11,        42,        71,

Let x represents the score,

Here, the number of scores, n = 7,

Thus, the mean score is,

Hence, the standard deviation of the given data is,

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb