WorksheetsMeasures of Center and Iqr
Total questions: 50
Worksheet time: 2hrs 31mins
Name
Class
Date
1.
The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below:
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?
a)
5
b)
6
c)
9
d)
11
2.
The number of miles that Jenna cycled each week for a 7-week period is shown:
36, 42, 28, 52, 48, 36, 31
What is the median number of miles Jenna cycled?
36, 42, 28, 52, 48, 36, 31
What is the median number of miles Jenna cycled?
a)
24
b)
36
c)
39
d)
52
3.
Find the median.
7, 1, 1, 7, 1, 4, 1
7, 1, 1, 7, 1, 4, 1
a)
4
b)
7
c)
1
d)
5
4.
Find the mode.
7, 1, 1, 7, 1, 4, 1
7, 1, 1, 7, 1, 4, 1
a)
7
b)
3
c)
1
d)
4
5.
Find the range.
7, 1, 1, 7, 1, 4, 1
7, 1, 1, 7, 1, 4, 1
a)
6
b)
5
c)
7
d)
3
6.
Find the mode.
5, 15, 10, 20, 15, 10, 15
5, 15, 10, 20, 15, 10, 15
a)
10
b)
15
c)
20
d)
5
7.
In the last 5 games, Kevin Durant scored 22, 22, 18, 12, and 21 points. What is Durant's Mean (Average) score per game?
a)
19 points per game
b)
95 points per game
c)
18.6 points per game
d)
22 points per game
8.
In the past 13 games, Klay Thompson made 52 assists. What is Thompson's mean (average) assists per game?
a)
4 assists per game
b)
13 assists per game
c)
65 assists per game
d)
39 assists per game
9.
This is a dot plot of random values. What is the Mean?
a)
4.84
b)
242
c)
50
d)
50.24
10.
How many students are in the class?
a)
A. 12
b)
B. 28
c)
C. 23
d)
D. 60
11.
The Table above shows the points scored by the JV basketball team in their first seven games. Calculate the mean, median, mode and range. Which statistical measure makes the team sound the best?
a)
Mean
b)
Median
c)
Mode
d)
Range
12.
Extreme values are also known as what?
a)
interquartile ranges
b)
modes
c)
medians
d)
outliers
13.
What measure of center was most affected by the outlier?
a)
mean
b)
median
c)
mode
d)
range
14.
Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have.
1,0,1,5,6,3,4
1,0,1,5,6,3,4
a)
3.33
b)
2.85
c)
3
d)
3.5
15.
What is the IQR?
a)
5.5
b)
4
c)
4.5
d)
6
16.
Determine the mean absolute deviation of the data. 9, 7, 11, 10, and 8
a)
9
b)
6
c)
1.2
d)
5
17.
What is the first step when calculating the Mean Absolute Deviation?
a)
Find the distance each value is from the mean
b)
Find the mean of the distances
c)
Find the mean of the data
18.
What is the median?
a)
3
b)
2
c)
1
d)
5
19.
Find the MAD of the data set: {14, 4, 7, 12}
Round to the nearest hundredth.
Round to the nearest hundredth.
a)
4
b)
3.75
c)
3.99
d)
2.74
20.
How many parts are there to a box-plot?
a)
2
b)
5
c)
3
d)
4
21.
What was the highest score on the math test?
a)
53
b)
79
c)
97
d)
90
22.
The table displays the frequency of scores on a 10 point quiz. Find the median of the scores.
a)
7
b)
8
c)
9
23.
Describe the histogram:
a)
Left Skewed
b)
Symmetrical
c)
Right Skewed
d)
Uniform
24.
How are the mean and the median likely to be related in this histogram?
a)
Mean > Median
b)
Mean = Median
c)
Mean < Median
25.
How would you describe this distribution?
a)
Left skewed
b)
Uniform
c)
Right Skewed
d)
Symmetrical
26.
How are the mean and the median related in this distribution?
(choose the best answer)
(choose the best answer)
a)
Mean > Median
b)
Mean = Median
c)
Mean < Median
27.
How many employees are there that make between $33,000 and $43,000
a)
250
b)
500
c)
550
d)
750
28.
What kind of distribution is this?
a)
Left skewed
b)
Symmetrical
c)
Right skewed
d)
Uniform
29.
At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12,10,10,10,13,12,11,13,10
12,10,10,10,13,12,11,13,10
a)
13
b)
12
c)
11
d)
10
30.
What is the mode of the data below?
a)
0
b)
3
c)
5
d)
10
31.
What is the median of the data below?
a)
4
b)
5
c)
6
d)
7
32.
Which interval has the highest frequency?
a)
9 - 10 books
b)
7-8 Books
c)
5-6 Books
d)
3-4 Books
33.
What type of display is pictured below?
a)
Dot Plot
b)
Box Plot
c)
Histogram
d)
Pie Chart
34.
Select a question that could be answered by the graph.
a)
What is the mean?
b)
What is the median?
c)
How many students read more than 6?
d)
What was the most books read?
35.
a)
1
b)
5
c)
7
d)
8
36.
Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is Roger's median score?
a)
127
b)
155
c)
156
d)
193
37.
What was the highest score on the math test?
a)
53
b)
79
c)
97
d)
90
38.
If you surveyed 550 students and this was your results, how many liked comedy?
a)
20
b)
55
c)
500
d)
110
39.
On which day was the number of sugar cookies made at the bakery greater than the number of chocolate cookies?
a)
Monday
b)
Tuesday
c)
Thursday
d)
Saturday
40.
What percent of people chose vanilla as their favorite ice cream?
a)
25%
b)
324%
c)
3.24%
d)
90%
41.
What is the total number of students who attend the 5 high schools?
a)
2,150
b)
2,000
c)
3,150
d)
2,100
42.
Find the mean of the dot plot. Round to the nearest hundredth.
a)
22.36
b)
22.46
c)
22.56
d)
None of these
43.
What percent of the test scores of class # 2 fall between 70% and 90%?
a)
10%
b)
25%
c)
50%
d)
75%
44.
How many percent of the test scores of class # 1 are between 70% and 80%?
a)
10%
b)
25%
c)
50%
d)
75%
45.
Which class has the higher test score median?
a)
Class #1
b)
Class # 2
c)
The medians are equal
d)
The median is not shown here.
46.
Compare the dot plots. Which dot plot has the great variability?
a)
Ms. Sanson's class
b)
Ms. Kwei's class
c)
They have equal variability
47.
(#15)The table below shows data on the times it takes to load a page of photos at two websites during the past year. Which website has the least variability in load times and why?
a)
Website A, because its interquartile range is larger
b)
Website A, because its range is smaller
c)
Website B because its interquartile range is smaller
d)
Website B because its range is larger
48.
Which graph is the best visual model for measures of center?
a)
Histogram
b)
Box Plot
49.
What is the median high temperature?
a)
60°F
b)
64°F
c)
65°F
d)
66°F
50.
What is Mean Absolute Deviation?
a)
The mean of the data
b)
The absolute value of the mean
c)
The variation of data values around the mode
d)
The rage distance between the data values and the mean
100 %
