Answer: 1.5
Step-by-step explanation:Let the standard deviation of the shoe size be represented by ' ' and the mean shoe size be represented by ' = 7.5'. Also, the sizes of the shoe be represented by ' '. So, . Hence, the standard deviation of the shoe size data for the math class is 1.5.
Average:
4.4 / 3 = 1.4666666666667
Count:
3
Sum:
4.4
Average:
4.4 / 3 = 1.4666666666667
Count:
3
Sum:
4.4
(4x-6)/3=8
4x-6=24
4x=30
x=7.5 or x=30/4
Answer:9 people
Step-by-step explanation:
6/3/2= 6x3/2 =9.