7.5.C.19 - Understanding Variability When Estimating a Population Proportion – Exit Ticket

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A group of seventh graders took repeated samples of size 20 from a bag of colored cubes. The dot plot below shows the sampling distribution of the sample proportion of blue cubes in the bag.

Describe the shape of the distribution.

Describe the variability of the distribution.

Predict how the dot plot would look differently if the sample sizes had been 40 instead of 20.

From EngageNY.org of the New York State Education Department. Grade 7 Mathematics Module 5, Topic C, Lesson 19. Internet. Available from https://www.engageny.org/resource/grade-7-mathemat...; accessed 8/Apr/2016.