What is a confidence interval? | Midterm Exam
Imagine you’re watching A Christmas Story, and Ralphie just opened up his brand-new Red Ryder BB Gun on Christmas Day. Red Ryder claims that their guns … Read More
t-scores for means | Midterm Exam
Here’s an example problem that deals with calculating a t-score for a given sample mean: Question: Red Ryder BB Guns claims that their rifles shoot … Read More
What is a t-score? | Midterm Exam
t-scores are best used when you (1) are not given the population standard deviation or (2) do not have a sample size greater than 30. … Read More
Z-scores for means vs. proportions | Midterm Exam
In our IQ example from What is a Z-score?, we were simply given a data point and asked to compute its Z-score based on the … Read More
Assumptions for Z-score and t-score | Midterm Exam
Now that you’ve learned how to calculate z-scores and t-scores, let’s learn the necessary assumptions to check before you calculate them in the future. You … Read More