Measures of Center
Center Continued
Measures of Spread
100
What is the mode of the dotplot below?
0 hours
100
Calculate the median of the dotplot below.
84
100
What is the range of the data set below?
51, 54, 56, 48, 67, 59, 61, 63, 64
67 - 48 = 19
MAKE SURE YOUR LIST IS IN ORDER!
200
Find missing value using the information below.
13, 16, 17, 4, 7, x
mean = 10
x = 3
200
What is the average number of cars?
1.1 cars
200
Which dot plot has a larger standard deviation?
After Exercise (bottom graph)
300
Haley wants to bring up her grade in biology. She got a 87, 79, and a 92 on the first three quizzes. What would she need on the last test to bring up her quiz average to a 90?
102 (extra credit???)
300
Kyla's grade report from her English class is below. What would be her overall average in class?
72.9 (C-)
300
What is the IQR of the data set below?
5, 6, 7, 2, 1, 4, 7
7 - 2 = 5
MAKE SURE DATA IS IN ORDER
400
The average of the data values below is 10. Solve for x.
2x, 5x-1, 6, x+3
x=4
400
What is the median temperature?
75-80 degrees
400
The frequency table below includes data on the number of pets owned by students in Mr. Johnson's class. A new student joins the class and reports that they own 10 dogs. How would the new student affect the standard deviation of the data set? Explain why!
The standard deviation would increase because the data is becoming more spread out.
500
In a class of p students, the average of the test scores is 70. In another class of n students, the average of the test scores is 92. When the scores of the two classes are combined, the average of the test scores is 86.
What is the value of
p/n ?
6/16 = 3/8
500
Riley collected data on the amount of movies her classmates watched over the past month. If the average number of movies watched is 2.5, how many students watched 4 movies?
3 students
500
Create a data set of 7 values where the the median is 24, the range is 10, and the IQR is 4.
Answers may vary
(24 needs to be the middle value...difference between max and min needs to be 10...difference between Q3 and Q1 is 4)