Range interquartile in group data Flashcards
1
Q
The cumulative frequency shows 120 students spending time studying. What is the range?
A
range = 14 - 2
= 12 hrs
2
Q
The cumulative frequency shows 120 students spending time studying. What is 25% of 120?
A
25/100 * 120 = 30
3
Q
The cumulative frequency shows 120 students spending time studying. What is 50% of 120?
A
50/100 * 120 = 60
4
Q
The cumulative frequency shows 120 students spending time studying. What is 75% of 120?
A
75/100 * 120 = 90
5
Q
The cumulative frequency shows 120 students spending time studying. What is the median and interquartile range?
A
median = 6.4 hrs
lower quartile = 5.4
upper quartile = 7.8
interquartile range = 7.8 - 5.4
= 2.4 hrs
