Histograms and Frequency Tables
What range has the highest frequency?
76-80 & 86-90
Do more students play basketball or not play basketball?
Play basketball
Range?
95
What percentage of people make $3700 or more per month?
0.15%
How do you calculate the mean of a data set? (Average)
Add up all numbers, then divide by how many numbers there are.
What is the shape of the distribution?
Uniform
Are there more girls in the class or boys?
Boys
IQR?
35
What percentage of make at least $3300 per month?
2.5%
What is the median of a data set?
The middle number.
How many people scored between a 71-75?
6
What percentage of students play basketball?
62.5%
What percent of people scored between a 30 and a 60 on the test?
Approx. 25%
What percentage makes at least $2100 per month?
84%
What is the mode of a data set?
The number(s) that appear the most.
How many people scored 76 or more?
26
Given that a student is a girl, what is the probability that she doesn't play basketball?
46.67%
What percent of people scored at least a 25 on the test?
Approx. 75%
How many people make between $2900 and $3300?
810
Cars scored had these three scores on her past three tests: 75%, 85%, 95%. She is hoping to have an average test score of 95%. What must she score on her next test to make that happen?
125%
How many people scored at least an 86?
13
Given a student plays basketball, what is the probability that they are a boy?
60%
If there were 20 people in the class, how many of them scored above a 60%
Approx. 5 people
How many peoples monthly income is within one standard deviation from the mean?
4080
Cars scored a 75%, 85%, and 95%, on the last three tests. If she were to score a 100% on the next test, how much would her average increase?
3.75%