Answer:

Range: 34

Ave.Dev: 8.7

Variance: if population variance = 102.23, if sample variance = 110.96

Standard Dev: if population variance = 10.11, if sample variance = 10.53

Step-by-step explanation:

RANGE SOLUTION:

Range = highest value - lowest value

Range = 49 - 15

Range = 34

Final answer: 34

AVERAGE DEVIATION SOLUTION:

calculate for the mean:

iamdumbsoiwenthere AVERAGE DEVIATION SOLUTION:

calculate for the mean:

̅ = 15 + 28 + 25 + 48 + 22 + 43 + 49 + 34 + 22 + 33 + 27 + 25 + 22 + 20 + 39/15
= 452/15
= 30.13

iamdumbsoiwenthere Formula: |−̅|
−̅ = 15 − 30.13 = -15.13 →|-15.13| = 15.13
−̅ = 28 - 30.13 = -2.13 →|-2.13| = 2.13
−̅ = 25 - 30.13 = -5.13 →|-5.13| = 5.13
−̅ = 48 - 30.13 = 17.87 →|17.87| = 17.87
−̅ = 22 − 30.13 = -8.13 →|-8.13| = 8.13
−̅ = 43 − 30.13 = 12.87 →|12.87| = 12.87
−̅ = 49 - 30.13 = 18.87 →|18.87| = 18.87
−̅ = 34 - 30.13 = 3.87 →|3.87| = 3.87

iamdumbsoiwenthere −̅ = 22 - 30.13 = -8.13 →|-8.13| = 8.13
−̅ = 33 − 30.13 = 2.87 →|2.87| = 2.87
−̅ = 27 − 30.13 = -3.13 →|-3.13| = 3.13
−̅ = 25 - 30.13 = -5.13 →|-5.13| = 5.13
−̅ = 22 − 30.13 = -8.13 →|-8.13| = 8.13
−̅ = 20 − 30.13 = -10.13 →|-10.13| = 10.13
−̅ = 39 − 30.13 = 8.87 →|8.87| = 8.87

iamdumbsoiwenthere Average Deviation = 15.13 + 2.13 + 5.13 + 17.87 + 8.13 + 12.87 + 18.87 + 3.87 + 8.13 + 2.87 + 3.13 + 5.13 + 8.13 + 10.13 + 8.87/15
= 130.39/15
= 8.7

acepalma saan po ba ang tamang sagot dyan