Collection And Analysing Of Data Worksheets Page 38
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48Mini Activity
Step 1 Make a spinner and a tally
chart like the ones shown.
1
2
1
2
Step 2 Perform an experiment.
Spin the spinner 50 times.
1
3
Record the result.
4
3
Step 3 Graph the results in a
bar graph or line plot.
1. Use the results to make
Experiment
a prediction for your
Outcome
Tally
Number
next spin.
1 Red
2 Yellow
2. What kinds of things
3 Blue
do you look for when
4 Green
making predictions?
3. What information from your bar graph or line plot
helped you make your predictions?
The tally chart shows the results of
The tall chart sho s the res lts of
Pick a Marble
choosing a marble from a bag 50 times
Tally
Total
Outcome
and then replacing it each time.
Yellow
26
See Example 1
1. What color is likely to be chosen next?
Orange
4
Why?
Green
10
2. What two colors are equally likely to be
Blue
10
picked? Explain.
3. Is it reasonable to predict that twice as
many marbles are yellow than any other color? Why?
E
There are 28 students. Of the students,
4.
TALK MATH
18 are girls. If the students put their names in a bag, do you
think a boy’s name or girl’s name will be picked first? Explain.
Lesson 5B Probability 333
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