Concept explainers
a.
To write: A question to be answered through a survey. Also, describe the method used to gather the data, and explain the reason for choosing the method,
a.
Answer to Problem 20PPS
Survey: Means of transport that students in a class take.
Explanation of Solution
Question: Means of transport that students in the class take to reach school.
Method: Every second person coming to the class is asked to name the means of transport they use to come to school.
Reason for choosing the method: The method is unbiased as sample is selected at random.
b.
To devise: A method to conduct the survey using an unbiased sample.
b.
Answer to Problem 20PPS
Method: Every second person coming to the class is asked to name the means of transport they use to come to school.
Explanation of Solution
Method: Every second person coming to the class is asked to name the means of transport they use to come to school.
Reason for choosing the method: The method is unbiased as sample is selected at random.
Reason for choosing the sample: It is easy to ask people of the same class to name their means of transport. Also the population is limited and the sample can be large thus helping to get accurate results.
c.
To conduct: The survey.
c.
Answer to Problem 20PPS
The result of the survey is as follows:
School bus-
Bicycle-
Car-
Walking-
Explanation of Solution
The sample is
The result of the survey is as follows:
School bus-
Bicycle-
Car-
Walking-
d.
To record: The results in a table.
d.
Answer to Problem 20PPS
The results are:
Explanation of Solution
The results are:
d.
To graph: The result.
d.
Answer to Problem 20PPS
The graph is obtained as follows:
Explanation of Solution
A graph can be obtained as follows:
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Algebra 1
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