Statistical Question
Dot Plots
Mean
Range
Median/Mode
100
Is this a statistical question: is my hair brown or blonde?
NO, data does not vary
100
The following dot plot shows the number of hours 15 people exercised per week.
What is the greatest number of hours someone exercised?
9
100
What is the mean of: 12,12, 12, 10, 10?
11.2
100
What is the range of: 1,2,3,4,5,72?
71
100
What is the mode of 1,2,2,2,2,3,3,3?
2
200
What does a statistical question have to have happen in order to be a statistical question?
*variability - more than one answer
200
How many people scored a goal?
19
200
What is the mean of 2,3,40?
15
200
How do we calculate the range?
Subtract the lowest number from the highest number.
200
What is mode?
A number that repeats the most in the data set
300
Is this a statistical question, "How old are the students in our school"
Yes
300
A teacher asked 20 students how many books they read last summer. The dot plot displays the data.
What is the most common number of books read (mode)?
1
300
How do we calculate the mean?
Add up all the numbers in a set and divide them by the number of in the values set.
300
How do you calculate the range?
Largest number - Smallest number
(Find the largest number and then subtract the smallest number.)
300
What is the mode and median of 4, 1, 3, 0, 2, 2, 3?
0, 1, 2, 2, 3, 3, 4
Mode = 2,3
Median = 2
400
Ask the each student in the class: "What is your favorite color?" Is this a statistical question?
no
400
The following dot plot shows the number of hours 15 people exercised per week. Are there any outliers?
Yes, 6 and 9
400
What is the mean of: 25, 36, 14, 12, 20, 10?
19.5
400
True or False: 14, 13,12 Range= 2
true
400
What is median?
The middle number of an ordered data set is the median.
500
Is this a statistical question:
How many students are wearing Nike tennis shoes in this class?
no
500
The following dot plot shows the number of hours 15 people exercised per week.
How many people exercised 2 hours per week?
4
500
What is the mean of: 22, 34, 56, 2?
28.5
500
What is is the Range of: 54, 4, 32, 5, 96, 46
96 - 4 = 92
500
Find the median of these numbers: 5, 2, 15, 16, 4, 0
0, 2, 4, 5, 15, 16
4 + 5 = 9
9/2 = 4.5