Q. For the following set of data, find the population standard deviation, to the nearest hundredth 102,138,107,112,125,91,134,110
Calculate Mean: First, we need to calculate the mean (average) of the data set. To do this, we add up all the numbers and then divide by the number of data points.Calculation: Mean = (102+138+107+112+125+91+134+110)/8Mean = 919/8Mean = 114.875
Calculate Variance: Next, we calculate the variance. Variance is the average of the squared differences from the Mean. To find the variance, we subtract the Mean from each number, square the result, and then average those squared differences.Calculation: Variance = [(102−114.875)2+(138−114.875)2+(107−114.875)2+(112−114.875)2+(125−114.875)2+(91−114.875)2+(134−114.875)2+(110−114.875)2]/8Variance = [(12.875)2+(23.125)2+(7.875)2+(2.875)2+(10.125)2+(23.875)2+(19.125)2+(4.875)2]/8Variance = [165.765625+534.765625+62.015625+8.265625+102.515625+570.015625+365.765625+23.765625]/8Variance = 1832.875/8Variance = 229.109375
Calculate Standard Deviation: Now, we calculate the population standard deviation, which is the square root of the variance.Calculation: Standard Deviation = 229.109375Standard Deviation ≈15.136