Surveys And Samples - Math Worksheet printable pdf download

Surveys And Samples - Math Worksheet

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Date

Surveys and Samples

People often use surveys to collect data. The part of a population that is surveyed is

called a sample. The different methods of collecting data are called sampling

techniques.

Decide Choose a simple question of interest you could ask your classmates. Then

predict the most popular response.

Question:

Prediction:

Write your answers to exercises 2–6 on a separate sheet of paper.

A random sample is a group that represents the whole population. Put the names

of all your classmates in a paper bag. Mix up the names and draw 5 names out of

the bag without looking. Record the names and ask these students your question.

Record your results.

A convenience sample is one in which the subjects chosen are easiest to reach or

the sampling is done easily. Ask 5 students who sit around you your question.

Record your results.

A systematic sample is one in which one subject is selected at random and the

remaining subjects are selected according to a pattern. Use an alphabetical list of

your classmates. Pick one student from the first 5 names on the list. Then select

every fourth student on the list. Record the names and ask these students your

question. Record your results.

Analyze Compare the survey results for each sampling method. How do they

compare to your prediction?

Explore It Describe the three sampling techniques you used. Which one do you

think is the most fair? Why?

Surveys And Samples - Math Worksheet