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# Type of Sampling and Mean, Median, Mode, and Mid-Range

1: Given the situation described, identify the type of sampling involved. A student doing a report on fashion trends asks all her best friends their opinion on plaid clothing.

- Random sampling
- Systematic sampling
- Convenience sampling
- Cluster sampling
- Stratified sampling

2: Scripps Hospital surveyed 10 patients on each floor every day in February. Did this study use a sample or the population?

3: A health organization is studying how many fat grams are consumed by adults in a single meal by considering 11 commonly eaten meals chosen at random. Below are the data (in fat grams/meal).

5.1 12.3 15.6 13.1 9.0 7.8 8.1 21.0 12.3 14.1 7.1

From this data, find the sample mean, median, mode and mid-range for this data. Round each to the nearest tenth, if needed. Include units with each answer.

#### Solution Preview

1: Random sampling - The student would select an arbitrary number of her friends in no particular order.

Systematic sampling - Here the student might select her sample by creating a list of her friends alphabetically, and selecting every third person.

Convenience sampling - For this instance the student may just sit in her room and wait ...

#### Solution Summary

THis posting finds the sample mean, median, mode and mid-range for this data. Round each to the nearest tenth, if needed. It also includes units with each answer.

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