Statistics 101

11.What type of statistics summarizes data?

13.If a dataset has two modes, what is it called?

10.What does the z-score measure?

4.What measure of central tendency is least affected by outliers?

What is a population in statistics?

3.What is the formula for the mean (\bar{x})?

6.According to the Empirical Rule, what percentage of data falls within 2 standard deviations of the mean?

8.If two events are independent, how do you calculate their combined probability?

12.Which sampling method divides the population into subgroups and selects randomly from each?

20.What is the Central Limit Theorem?

18.What is the probability of rolling a 6 on a fair six-sided die?

16.What measure describes the difference between the highest and lowest values in a dataset?

9.What type of distribution is used for binary outcomes (success/failure)?

5.What does standard deviation measure?

15.What is the variance formula?

2.Which sampling method selects every nth individual?

19.What is the shape of a normal distribution curve?

14.What measure of central tendency is most affected by extreme values?

17.What is the probability of an event that is certain to occur?

7.What is the formula for probability?