Sample Proportion

In this post, we understand the concept of the sample proportion \hat{p} as a random variable whose value varies between samples, and the formulas for the mean p and standard deviation \sqrt{p(1-p)/n} of the sample proportion \hat{p} . This syllabus dot point is a part of the QCE Maths Methods course under the topic Interval Estimates for Proportions and the Normal Distribution and sub-part Sample Proportion.

Sampling distribution of sample proportion

Part 1

Part 2