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Step2247 [10]
2 years ago
13

The hand spans, to the nearest cm, of some students in a class are shown below: 19, 22, 21, 15, 18, 22, 17, 19, 16, 21, 19, 18,

22, 20, 21, 22, 19, 15, 17, 21 Henry created the following incorrect dot plot to represent the data: Dot plot showing 2 dots over 15, 1 dot over 16, 2 dots over 17, 2 dots over 18, 4 dot over 19, 1 dot over 20, 5 dots over 21, and 4 dots over 22 What should Henry do to make the dot plot correct?
Mathematics
2 answers:
Greeley [361]2 years ago
7 0
Your Answer is D, delete 1 dot on 21.
docker41 [41]2 years ago
7 0
<h2>Answer:</h2>

He should remove one dot over 21 so that the actual data plot and his data plot matches.

<h2>Step-by-step explanation:</h2>

We are given a set of data points as:

19, 22, 21, 15, 18, 22, 17, 19, 16, 21, 19, 18, 22, 20, 21, 22, 19, 15, 17, 21

on making the frequency table of these data points.

             Hand span(cm)            Frequency

                     15                                2

                     16                                1

                     17                                2

                     18                                2

                     19                                4

                     20                               1

                     21                                4

                     22                               4

Hence, when we will make the dot plot of it then:

There must be:

2 dot over 15

1 dot over 16

2 dot over 17

2 dot over 18

4 dot over 19

1 dot over 20

4 dot over 21

and 4 dot over 22

<u>But according to Henry it was given:</u>

2 dots over 15

1 dot over 16

2 dots over 17

2 dots over 18

4 dot over 19

1 dot over 20

5 dots over 21

and 4 dots over 22

Hence, Henry should remove one dot over 21 in order to get the correct dot plot.

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