Statistics Exam - Correlation and Regression Inference
This practice exam covers statistical inference for correlation and regression - hypothesis tests and confidence intervals built on the Correlation calculator, the Linear Regression calculator and the Multiple Linear Regression calculator.
The questions ask why a test picks the distribution it does, how to read a confidence interval or a residual-normality check, and what a diagnostic like VIF or adjusted R² is really telling you. Every solution links the calculator that solves it, so you can reproduce each answer yourself.
New to the basics first? Start with the Correlation & Linear Regression exam before this one.
If you find this practice exam helpful or have improvement suggestions, please email your feedback to [email protected].
Practice answering statistics questions by selecting your answer and clicking the 'Submit' button. You will receive immediate feedback on whether your answer is correct, along with an explanation of the solution. To move on to the next question, click 'Next', or to view your overall score, click 'Score'.
Question types:
The questions ask why a test picks the distribution it does, how to read a confidence interval or a residual-normality check, and what a diagnostic like VIF or adjusted R² is really telling you. Every solution links the calculator that solves it, so you can reproduce each answer yourself.
New to the basics first? Start with the Correlation & Linear Regression exam before this one.
If you find this practice exam helpful or have improvement suggestions, please email your feedback to [email protected].
Practice answering statistics questions by selecting your answer and clicking the 'Submit' button. You will receive immediate feedback on whether your answer is correct, along with an explanation of the solution. To move on to the next question, click 'Next', or to view your overall score, click 'Score'.
Question types:
- Multiple choice - Choose the correct answer.
- Results - Fill in the results. You should round the final answer to at least 3 decimal places.
Please don't round the results at every step; if you do so, the final result will not be correct.
For example, if the result is 33.56789, you may enter: 33.568, or 33.56789, but you can't enter 33.567 without rounding, or round it to 2 decimal places as 33.57.
If the answer is smaller than 1 (a probability or a p-value), give at least 3 significant digits: for 0.041889 you may enter 0.0419 or 0.041889, but not 0.042.