Concept explainers
(a)
To find: Identify the sample, and suggest a population from which it was selected.
(a)
Answer to Problem 12.1MPS
The sample and population is stated above.
Explanation of Solution
Given information:
Alicia asked every fourth student which came in the classroom to choose their favorite from the three types of candy.
Calculation:
Calculate the expression
The sample is “every fourth student”.
The population is “every student that came in the classroom”.
Therefore, the sample and population is stated above.
(b)
To find: Classify the type of data collection used.
(b)
Answer to Problem 12.1MPS
The type of data collection is sample survey.
Explanation of Solution
Given information:
Alicia asked every fourth student which came in the classroom to choose their favorite from the three types of candy.
Calculation:
Calculate the expression
The type of data collection is sample survey as only a fraction of the population is taken.
Therefore, the type of data collection is sample survey.
(c)
To find: Identify the sample as biased or unbiased.
(c)
Answer to Problem 12.1MPS
The sample is biased.
Explanation of Solution
Given information:
Alicia asked every fourth student which came in the classroom to choose their favorite from the three types of candy.
Calculation:
Calculate the expression
The sample is biased as the whole population is being surveyed.
Therefore, the sample is biased.
(d)
To find: Classify the sample as simple, stratified or systematic.
(d)
Answer to Problem 12.1MPS
The sample is systematic.
Explanation of Solution
Given information:
Alicia asked every fourth student which came in the classroom to choose their favorite from the three types of candy.
Calculation:
Calculate the expression
Since, every fourth student is being asked so it follows certain systematic order.
Therefore, the sample is systematic.
Chapter SH Solutions
Algebra 1
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