Lemma
MediumSampling & experiments
OpenStax, Statistics §1.3 Frequency, Frequency Tables, and Levels of Measurement · Exercise 2 · Statistics · Sampling & experiments

Frequency, Frequency Tables, and Levels of Measurement · Exercise 2

Fifty part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below.

\begin{array}{|c|c|c|c|}\hline \text{# of Courses} & \text{Frequency} & \text{Relative Frequency} & \text{Cumulative Relative Frequency} \\ \hline \text{1} & \text{30} & \text{.6} & \\ \hline \text{2} & \text{15} & & \\ \hline \text{3} & & & \\ \hline\end{array}

(a) Fill in the blanks in.
(b) What percent of students take exactly two courses?
(c) What percent of students take one or two courses?

This problem refers to a figure in its source book that isn't reproduced here.

~8 minWritten answer · check your work with Lemma

OpenStax, Statistics · §1.3 Frequency, Frequency Tables, and Levels of Measurement · Exercise 2

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.

Your first check today doesn't need an account.

Your photos and PDFs are read once and not stored — only the transcription is kept.