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Learning Math Home
Data Session 3, Part B: Histograms
 
Session 3 Part A Part B Part C Part D Homework
 
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Session 3 Materials:
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Session 3, Part B:
Histograms

In This Part: Constructing a Histogram | Completing the Histogram | Interpreting a Histogram

Histogram  

Interval

Frequency for Interval

30 to < 40

4

40 to < 50

1

50 to < 60

17

60 to < 70

18

70 to < 80

7

80 to < 90

4

90 to < 100

1

The histogram and grouped frequency table you just created offer different ways to present your data (the time estimates) and provide different ways to answer our original question, "How well do people judge when a minute has elapsed?"


 

Problem B2

Solution  

Using only the histogram and grouped frequency table, give two descriptive statements that provide an answer to this question. (Since the goal is to estimate when a minute has elapsed, it would make sense to again consider how close the estimates are to the correct response which is 60 seconds.)


 

Problem B3

Solution  

a. 

According to the histogram and grouped frequency table, how many people's estimates were outside the interval from 50 to less than 70 seconds? That is, how many estimates were less than 50 seconds or 70 seconds or more?

b. 

How many estimates were within the interval from 50 to less than 70 seconds?

c. 

How many estimates were outside the interval from 40 to less than 80 seconds?

d. 

In Problem A5, only nine people's estimates were more than 10 seconds away from one minute. Does your answer to question (a) of this problem imply that the people in this group were not as good at estimating a minute's time? If so, why? If not, how could you make a fairer comparison between the two sets?


Stop!  Do the above problem before you proceed.  Use the tip text to help you solve the problem if you get stuck.
The second data set comes from a group of 52 time estimates. How many were in the first group?   Close Tip

Next > Part C: Relative and Cumulative Frequencies

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