Question

The mean of the six observations 5,15,25,35,45,55 is 30. Find its variance

Answer 1

Answer:

The mean of the six observation 5,15,25,35,45,55 is 30 find the variances .? ... → variance = sum of (difference)² / number of observation . → variance = 1750 / 6 = 291. 67

Answer 2

5+15+25+35+45+55+30/7

beacuse mean= t

sum of all observation / no.of observation