contestada

The times taken by 18 people to complete a puzzle are shown.
Time, t minutes
Frequency
8-
0 < t ≤ 10
5
7
10 < t ≤ 20
5
6-
20 < t ≤ 30
7
30 < t ≤ 40
1
Draw a frequency polygon
for the data.
10
20 30
Time, t (minutes)
Frequency
3
LO
2-
1
0-
0
40

Respuesta :

Lanuel

A frequency polygon for the times taken by 18 people to complete a puzzle is shown in the image attached below.

How to draw a frequency polygon?

In order to draw a frequency polygon for the given data, we would construct a frequency table as follows:

Time, t minutes                                      Frequency

0 < t ≤ 10                                                         5

10 < t ≤ 20                                                       5

20 < t ≤ 30                                                      7

30 < t ≤ 40                                                      1

Next, we would determine the midpoint of the data set:

  • 0 < t < 10 = 10/2 = 5.
  • 10 < t < 20 = (10 + 20)/2 = 15.
  • 20 < t < 30 = (20 + 30)/2 = 25.
  • 30 < t < 40 = (30 + 40)/2 = 35.

Read more on frequency polygon here: https://brainly.com/question/22273443

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Ver imagen Lanuel

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