Sexual harassment in middle and high schools. A nationally representative survey of students in grades 7 to 12 asked about the experience of these students with respect to sexual harassment.11 One question asked how many times the student had witnessed sexual harassment in school. Here are the data categorized by gender:

Lecture 8: Introduction to Inference and Understanding Sampling Distributions 9.1 Parameters, Statistics, and Statistical Inference - Some distinctions to keep in mind: ▯ Population versus Sample ▯ Parameter versus Statistic - Population: Parameter, population proportion, population mean - Sample: Sample mean, sample proportion, statistic Statistical Inference: - the use of sample data to make judgments or decisions about populations. Confidence Interval Estimation: - A confidence interval is a range of values that the researcher is fairly confident will cover the true, unknown value of the p