Rylan is calculating the standard deviation of a data set that has 9 values. he determines that the sum of the squared deviations is 316. what is the standard deviation of the data set? round the answer to the nearest tenth

6.3

Step-by-step explanation:

We have been given that Rylan is calculating the standard deviation of a data set that has 9 values. He determines that the sum of the squared deviations is 316.      

We will use the formula , where n represents the number of data points in a data set.

Upon substituting our given values in above formula we will get,

Therefore, the standard deviation of our given data set is 6.3.

complete the steps to find the area of the trapezoid.

area of rectangle = 256   square units

area of triangle 1 = 24  square units

area of triangle 2 = 16  square units

area of triangle 3 =   96 square units

area of trapezoid = 120  square units

step-by-step explanation: