1. Introduction to Psychology

Statistics Basics — Quiz

Test your understanding of statistics basics with 5 practice questions.

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Practice Questions

Question 1

Which of the following best distinguishes a population parameter from a sample statistic?

Question 2

Given the dataset [4,8,15,16,23,42,50,60], what is the interquartile range (IQR)?

Question 3

In a one-sample t-test with sample mean $\bar X=85$, hypothesized population mean $\mu_0=80$, sample standard deviation $s=10$, and $n=25$, what is the t-statistic?

Question 4

For a 95\\% confidence interval of the mean with sample mean $\bar X=100$, sample standard deviation $s=20$, and $n=16$, using the t-distribution with $df=15$ and $t_{0.025}=2.131$, what is the approximate confidence interval?

Question 5

For a one-sample effect size using Cohen's d with sample mean $\bar X=105$, hypothesized mean $\mu_0=100$, and $s=10$, what is $d$?