Dot Plots

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Class:

Date:

Show your work for each problem.

1.
In a dot plot, what does each dot represent?
1. a)One data point
2. b)The total count
3. c)The average
4. d)Ten data points
2.
A dot plot shows: 3 dots above 5, 2 dots above 6, 4 dots above 7. What is the mode?
1. a)5
2. b)6
3. c)7
4. d)4
3.
A dot plot shows test scores: 5 dots above 80, 3 dots above 90, 2 dots above 100. How many students took the test?
4.
A dot plot shows hours of sleep: 2 dots above 7, 6 dots above 8, 4 dots above 9. What is the range?
5.
What is another name for a dot plot?
1. a)Pie chart
2. b)Scatter plot
3. c)Line plot
4. d)Histogram
6.
Data: 4, 5, 5, 6, 5, 4, 7, 5, 6, 4. Find the mode and range.
7.
A dot plot shows ages: 1 dot above 10, 3 dots above 11, 5 dots above 12, 2 dots above 13, 1 dot above 14. What is the mode?
8.
A dot plot shows shoe sizes. There are 0 dots above size 5. What does this mean?
1. a)There is an error in the graph
2. b)Size 5 is the mode
3. c)No one has shoe size 5
4. d)Size 5 is the most common
9.
Create a frequency table for this data: 2, 3, 3, 4, 3, 2, 4, 4, 3, 5. Then find the total count.
10.
A dot plot shows goals scored: 4 dots above 0, 6 dots above 1, 3 dots above 2, 2 dots above 3. How many games were played?
11.
Class A: 70(2), 80(4), 90(3), 100(1). Class B: 70(1), 80(3), 90(4), 100(2). Which class has a higher mode?
12.
A dot plot shows quiz scores: 6(2), 7(3), 8(5), 9(4), 10(1). If one more student scores 7, does the mode change?
13.
A dot plot shows pet counts: 0(3), 1(7), 2(4), 3(2), 4(1). How many more people have 1 pet than have 3 pets?
14.
Data: 1, 2, 2, 3, 3, 3, 4, 4, 5. A cluster is a group of values close together with many dots. Where is the cluster in this data?
15.
A dot plot shows book lengths: 100(2), 150(0), 200(5), 250(0), 300(3). What does the pattern of gaps tell us?
1. a)150 is the mode
2. b)The data has errors
3. c)All books are the same length
4. d)No books have 150 or 250 pages