Mean & Median
What is the mean of 4, 6, and 8?
6
What is the range of 2, 5, 9, 12?
10
What type of graph uses bars to show data?
Histograms
Is "How tall am I?" a statistical question?
No
What measure tells you the "typical" test score?
mean - the average
Find the median: 3, 7, 9, 11, 15
9
Which number is the outlier: 5, 6, 7, 8, 25?
25
What do you call the highest point on a dot plot?
Peak
Why is "What are students' favorite colors?" statistical?
need to collect data and answers vary
If 5 students scores 80, 85, 90, 95, 100, what's the median?
90
What is the mean of 10, 15, 16, 20?
15.25
The five number summary of a data set is: min:2, Q1:5, Median:6, Q3:7, Max:10. Find the IQR.
2
What display shows data using dots about a number line?
dot plot
Write a statistical question about pets.
Answers vary
Class scores: 70, 75, 75, 80, 100. What's the mode?
75
Data set: 12, 15, 18, 21, 30. What is the mean and the median?
Mean: 19.2
Median: 18
18
What is the difference between a histogram and a bar graph?
Explain why "How many siblings do 6th graders have?" expect variability?
Answers vary.
Survey shows 20 students: 10 choose pizza, 6 choose tacos, 4 choose burgers. Create a frequency table.
table includes three choices and tally marks for each student's choice.
A data set has 6 numbers and the mean is 15. If 5 of the numbers are: 11, 21, 10, 23, 13, what is the missing number?
Create a data set of 7 numbers with a range of 20.
Answers vary.
What are the five numbers you need to find before making a box plot?
Minimum, Q1, Median, Q3, Maximum
Write a statistical question about screen time.
Answers vary
Analyze: Class A mean= 85, median= 83. Class B mean=85, median=88. What does this tell you?
Class A might have had a high outlier and Class B might have had a low outlier.