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

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.

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