MTH 154 Northern Virginia Never and Rarely Relative Frequencies Questions

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nelb92

Mathematics

MTH 154

Northern Virginia Community College

MTH

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I have a StatCrunch practice to do. I don't know how to use StatCrunch and need someone to help me how to do these questions.

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Chapter 2 StatCruch Practice. Use StatCruch to Answer the Questions. #1 #2 #3
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Explanation & Answer

Hi Aryo92, here's the final answer! Sorry for the wait, before each answer is an in depth explanation! IT was a pleasure working with you!😁

StatCrunch
Question 1:
Explanation: You create a relative frequency distribution by dividing each frequency with the
frequency total. Remember this table is for the adults. We can represent in a table like so:
a)
Number of texts

Frequency

Relative frequency

None

173

173/1936 = 0.08

0-10

978

978/1936 = 0.5

11-20

249

249/1936 = 0.13

21-50

249

249/1938 = 0.13

51-100

134

134/1936 = 0.07

101+

153

153/1936 = 0.08

Total

1936

1

Please not that you can represent this data in the form of a histogram if asked.
Explanation: Let’s construct a second table for teens this time
b)
Number of texts

Frequency

Relative frequency

None

13

13/627 = 0.02

1-10

138

138/627 = 0.22

11-20

69

69/627 = 0.11

21-50

113

113/627 = 0.18

51-100

113

113/627 = 0.18

101+

181

181/627 = 0.3

Total

627

1

Explanation: Now we need to represent the data in a side by side bar graph. This means that
we will have two bars comparing teens and adults touching, but when they are in the same
range. Remember to give the graph a heading and to label the x and y-axis:
c)

Explanation: When comparing the texting habits you should take note of a few things. The
extremes, so None and 101+ and the majority in the middle.

d) There seem to be less teens that don’t text at all compared to adults, and there also are more
teens that text more than 101 messages compared to adults, but there are more adults that text
between 1-100 messages.

Question 2
Explanation: You should be fairly familiar with drawing tables now, This table will look as
follows:
a)
Response

Frequency

Relative Frequency

Never

125

125/4776 = 0.03

Rarely

324

324/4776 = 0.07

Sometimes

552

552/4776 = 0.11

Most of the time

1257

1257/4776 = 0.26

Always

2518

2518/4776 =0.52

Total

4776

1

Explanation: In order to get a relative frequency into a percentage you simply multiply it by 100.
b) 0.52 * 100 = 52% of respondents answered
Explanation: Here you do the same thing with both Never and Rarely relative frequencies.
c) Never: 0.03 * 100 = 3%
Rarely: 0.07 * 100 = 7%
Explanation: Here we use the values from the frequency column to draw up a bar graph.
Remember to label the graph with heading and label the x and y axis.
d)

Explanation: Here we draw the same graph, but using the values from the relative frequencies
column. Again don’t forget to label the graph as well as the x and y axis.
e)

Explanation:In order to construct a pie chart...


Anonymous
Excellent! Definitely coming back for more study materials.

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