find the variance and standard deviation of the given set of data to the nearest tenth. {530, 150, 320, 500, 200, 690, 770}

a. variance = 48,326.5, standard deviation = 219.8

b. variance = 56,381, standard deviation = 237.4

c. variance = 219.8, standard deviation = 48,326.5

d. variance = 48,326.5, standard deviation = 24,163.3

B. variance = 56,381, standard deviation = 237.4

Step-by-step explanation:

mean = 451

variance =( (530-451)² + (150-451)² + + (770-451)²) / 7 = 56380.95

STDEV = √Variance = √56380.95 = 237.46

dont understand

step-by-step explanation:

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.