Measure of Center
Find the Mean of this data set: (4,8,10,6,2)
What is 6
Find the range: (14,9,22,7,18)
What is 15
You surveyed classmates about their favorite pizza topping. What type of data is this categorical or numerical?
What is categorical
Is "What is my favorite song?" a statistical question?
What is no
What does MAD stand for, and what does a small MAD tell you about a data set?
What is Mean Absolute Deviation and a small MAD means the data is more consistent
Find the median: (12,7,15,9,20,11)
What is 11.5
Seven after-school clubs have these enrollments: 9,13,15,11,18,20,16. Find the interquartile range (IQR).
What is 7
On a dot plot, four dots are stacked above 2 and three dots are stacked above 1. What does one dot plot represent, and what is the mode?
What is one dot is one value and the mode is 2
Is "How many hours did each student in our class sleep last night?" a statistical question?
What is yes
Name the five parts(values) that are in the Five-Number Summary.
What is Minimum, Q1,Median, Q3, and Maximum
Find the mode: (3,7,3,9,7,5,7)
What is 7
Give the complete five-number summary.
Data Set: (3,5,8,10,12,15,19)
What is Minimum = 3; Q1 = 5; Median = 10, Q3 = 15; Maximum = 19
You are building a histogram with the intervals 61-70 and 71-80. A score of exactly 70 comes in. Which bar does it go in, and why must histogram bars touch each other?
What is it goes in 70-80 and the bars touch because the number line has no gaps
What is a statistical question?
What is a question with more than one answer (answer varies)
Find the Mean Absolute Deviation.
Data Set: (3,5,7,9)
What is MAD = 2
A player scored these points in seven games. Which measure of center best represents the data, and why?
Data Set: (20,20,21,18,22,19,60)
What is the median
Which group has the greater IQR, and by how much?
Group A:Min=10;Q1=15;Median=20;Q3=24;Max=30
Group B:Min=8;Q1=14;Median=18;Q3=26;Max=34
What is Group B, by 3
On a box plot, the right whisker is much longer than the box. Does that mean more of data is in the whisker?
What is no
Rewrite this so it becomes a statistical question, then name the type of data you would collect: "How much does this bag of chips weigh?"
What is numerical data. Answer will vary.
What is an outlier, and which measure of center does it affect most?
What is a value that is far away from the rest of the data and it affects the mean.
A class's test score are shown. The teacher adds one more score: 40. Which is affected more, the mean or the median? Show how much each one changes.
Data Set: 72,75,78,80,82,85,88
What is the mean
Find the median, Q1, and Q3.
Data Set: (5,8,10,12,15,16,20,22)
What is Median = 13.5; Q1 = 9; Q3 = 18
Name one thing a histogram can not tell you that a dot plot can. Explain why.
What is the exact individual data values
Write one statistical question about our school.
Both sets have a mean of 20 and a median of 20. Which set is more consistent, and how do you know?
Set A: (18,19,20,20,21,22)
Set B: (8,14,20,20,26,32)
What is Set A