Back to Understand statistics as a process for inference — Problem 3 · Task Set 12

Exercises: Understand Statistics as a Process for Making Inferences

Work through each section in order. For each scenario, read carefully and use the correct vocabulary (population, parameter, sample, statistic) and notation. Explain your reasoning where a written response is asked for.

Grade 10·21 problems·~40 min·Common Core Math - HS Statistics and Probability·group·hss-ic-a-1

Work through problems with immediate feedback

Fluency Practice

A problem states: "A bag contains 60% red marbles. If you draw 20 marbles, how many do you expect to be red?" Compared with statistical inference, which direction does this reasoning run?

Population to sample — this is probability (we know the population and predict the sample).

Sample to population — this is inference (we observe a sample and estimate the population).

It runs in neither direction; it is just arithmetic.

Sample to sample — it compares two samples.