6. Data Analysis
Statistics Basics — Quiz
Test your understanding of statistics basics with 5 practice questions.
Practice Questions
Question 1
A data set consists of $n$ values. If the sum of these values is $S$, and the mean is $M$, which of the following expressions correctly relates $S$, $M$, and $n$?
Question 2
In a skewed distribution, which of the following is generally true regarding the relationship between the mean, median, and mode?
Question 3
A data set has a median of $25$. If the smallest value in the data set is increased, but it remains smaller than the original median, what can be said about the new median?
Question 4
Which of the following data sets has a median that is equal to its mean?
Question 5
A teacher recorded the scores of $10$ students on a test. The scores are: $ \{60, 70, 75, 80, 80, 85, 90, 90, 95, 100\} $. What is the interquartile range (IQR) of these scores?