Question

The following data show the number of times different students of a class practice karate in a week:

4, 6, 7, 3, 4, 4, 2, 5, 4, 3, 1, 2, 5, 2, 3, 5, 1, 3, 2

The dot plot below was made to represent the data.

A box plot showing 2 dots over 1, 4 dots over 2, 4 dots over 3, 4 dots over 4, 4 dots over 5, 1 dot over 6, and 1 dot over 7

For which number is the data plotted incorrectly?

1
3
4
5

Answer 1

5 is plotted incorrectly because there were 4 dots over 5 when there were only 3 inputs of 5

Answer 2

Option 4 - 5

Explanation:

Given : The following data show the number of times different students of a class practice karate in a week:

4, 6, 7, 3, 4, 4, 2, 5, 4, 3, 1, 2, 5, 2, 3, 5, 1, 3, 2

The dot plot below was made to represent the data.

A box plot showing 2 dots over 1, 4 dots over 2, 4 dots over 3, 4 dots over 4, 4 dots over 5, 1 dot over 6, and 1 dot over 7

To find : Which number is the data plotted incorrectly.

Solution :

We again plot the data and create the table to find which number is incorrect.

No. of weeks Number of times practice done

1 2

2 4

3 4

4 4

5 3

6 1

7 1

According to our data 5 has 3 dots not 4.

Therefore, Option 4 is correct.

The dot plot is attached below.