Question

Four students found the mean of the data set 26, 31, 39, 30, 16, 16, 18, 38. Which student found the correct mean? A Ashrita’s work: StartFraction 26 + 31 + 39 + 30 + 16 + 16 + 18 + 38 Over 8 EndFraction = StartFraction 214 Over 8 EndFraction = 26.75

B Collette’s work: StartFraction 26 + 38 Over 2 EndFraction = StartFraction 64 Over 2 EndFraction = 32 C Daniel’s work: StartFraction 26 + 31 + 39 + 30 + 18 + 38 Over 7 EndFraction = StartFraction 198 Over 7 EndFraction = 28.29 D Lora’s work: StartFraction 30 + 16 Over 2 EndFraction = StartFraction 46 Over 2 EndFraction = 23

Answer 1

A.) ashrita

Explanation:

Answer 2

Mean of the data set is one of the most commonly used measures of central tendency. Basically, it means the average value of the data set. For finding it, one doesn't have to arrange the data in order. All it takes is to add them all together and divide that by the number of the data. It can be mathematically written as:

(x1 + x2 + x3 + ..... + xn) / n

This obviously means that Ashrita did the best job in calculating the mean of this data set.