Question

You've randomly surveyed some students in your science class to find the number of hours per week they study. What is the mean, based on your sample? A) 4.75 Hours B) 5.05 Hours C) 5.25 Hours D) 5.45 Hours
STUDENT HOURS
KATY 5.5
MIKE 4.25
SAM 7.75
HOLLY 3.5
JAKE 6.25

Answer 1

You've randomly surveyed some students in your science class to find the number of hours per week they study. What is the mean, based on your sample?

STUDENT HOURS

KATY 5.5

MIKE 4.25

SAM 7.75

HOLLY 3.5

JAKE 6.25

Mean=$\frac{Sum Of Hours}{Number of Students}$

Sum Of Hours=5.5+4.25+7.75+3.5+6.25=27.25

Number of Students=5

mean=$\frac{27.25}{5}$

On dividing, 27.25 by 5, we get, 5.45

So, Mean=5.45

Answer: Option (d) : Mean=5..45hours

Answer 2

5.5 + 4.25 + 7.75 + 3.5 + 6.25 = 27.25
27.25 divided by 5 = 5.45
Answer is D = 5.45 hours