A teacher asked 20 students how many books they read last summer. The dot plot displays the data.
What is the MODE number of books read?
1
10, 30, 12, 45, 36, 25, 37, 40, 42, 44
25
The following histogram shows the ages of library visitors.
About how many people are between 60 and 80 years old?
between 37 and 39 ish
The following dot plot shows the number of hours 15 people exercised per week.
What is the greatest number of hours someone exercised?
9
The graph below shows the probability of drawing a card at random from a deck.What word best describes a graph where all outcomes are equally likely?
Uniform distribution
Is the following a statistical question or not? How many calories are in each hamburger at Red Robin?
Yes, it is a statistical question.
A teacher asked 20 students how many books they read last summer. The dot plot displays the data.
What is the RANGE of the number of books read?
9
Find Q3 of the following Data:
10, 30, 12, 45, 36, 25, 37, 40, 42, 44
42
The following histogram shows the ages of library visitors.
About how many people are less than 30?
About 12-14
The following dot plot shows the number of hours 15 people exercised per week.
Most people exercised _______ hours.
1
What is the distribution shape of this data?
Symetrical
How do you find the IQR
Q3 - Q1
A teacher asked 20 students how many books they read last summer. The dot plot displays the data.
What is the MEDIAN number of books read?
1.5
How many words does the fastest keyboarder type per minute?
95 WPM
The follow shows the distances people will drive to work.
About how many people drive more than 30 KM to work?
About 90
The following dot plot shows the number of hours 15 people exercised per week.
Identify the outlier(s)
6 and 9
The graph below shows heights of men and women. What word best describes this type of data distribution?
Bimodal/multimodal
When is median a more accurate measure of center than mean?
When you have outliers
A teacher asked 20 students how many books they read last summer. The dot plot displays the data.
What is the IQR of the number of books read?
4
The top 50% types between ______ and _____ words per minute.
70 and 100
The follow shows the distances people will drive to work.
How many people live very close to work?
About 95 (0-5km is close!)
There is a cluster between ____ and ____
0 and 3
What term best describes this type of data distribution?
There are 7 animal shelters in the local area. The number of cats in each is 4, 6, 3, 7, 4, 5, and 20. What is the mean, median, and range of cats in the shelters?
Mean = 7
Median = 5
Range = 17
A teacher asked 20 students how many books they read last summer. The dot plot displays the data.
What is the MEAN number of books read?
2.65/2.7
The bottom 25% types between ____ and ____ words per minute.
30 and 55
The follow shows the distances people will drive to work.
About how many total people were surveyed?
280-300
How many people exercised less than 3 hours?
10
Describe outliers, gaps, clusters, and how it is skewed.
possible outliers 47 to 50
gap from 44 to 47
cluster around 47 to 50
Skewed left
Frank has 3 nickels, 5 dimes, and 2 quarters. Find the mean or average value of each coin.
11.5 cents