All courses Math III · S-IC.1 47 of 55

Understand statistics as inference about population parameters from random samples.

Separate population, frame, sample, unit, and size

Problem

A study selects 500 voters from the city voter-registration list to estimate the preference of all registered city voters. Identify the target population, sampling frame, sample, and observational unit.

Your answer

A Target: all registered city voters. Frame: the registration list. Sample: the 500 selected voters. Unit: one recorded preference rather than one voter. B Target: the 500 selected voters. Frame: the voter registration list. Sample: the same 500 voters. Unit: one registered voter. C Target: all registered city voters. Frame: the voter registration list. Sample: the 500 selected voters. Unit: one registered voter. D Target: the registration list. Frame: all registered city voters. Sample: the 500 selected voters. Unit: one registered voter.

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Separate population, frame, sample, unit, and size

Turn a few problems into a learning session.

Make a more precise practice set.

Hint

Solution walkthrough

Identify target

Identify frame

Identify sample

Record unit and count

Submit all fields

Another way

Common mistake