Statistics BrainPop Quiz

Which of the following is an example of a statistic?

• (10 * 10) 15 = 115

• The average test score was 76

• Tomorrow night there will be a full moon

• It looks like there's a good chance of rain tonight

"The average Japanese woman lives to the age of 86." What is the population behind this statistic?

• A randomly selected group of Japanese women

• All of the women in the world

• All of the women in Japan

• Everybody in Japan

"The majority of U.S. car owners still buy American cars." Ideally, what would the sample be in the study that generated this stat?

• Everyone in the United States who owns a car

• Everyone in the United States who owns an American car

• A randomly selected group of car owners in the U.S

• A randomly selected group of Americans who own American cars

Mark Twain called statistics pliable, because you can adapt them to support any point. What does "pliable" mean?

• Flexible

• Trustworthy

• Useful

• Rigid

Which of the following statistical studies is trying to establish causality?

• A study of the average distance of field goals in the National Football League

• A study of how many trees have grown back after a forest fire

• A study of the types of movies teenage girls are most likely to watch on Friday nights

• A study of the relationship between playing video games and improved hand-eye coordination

A census is a statistical study in which an entire population is counted, not just a sample. Which of the following stats is most likely to be based on a census?

• The mean number of stars in visible galaxies

• The average SAT score for a high school

• The number of jobless adults in a country

• The average wind speed of a tornado

You pick the king of diamonds from a full deck of playing cards. Based on this data, which of the following statistics makes a prediction?

• You are more likely to pick a queen than a king on your next draw

• There are now 51 cards left in the deck

• There are only three kings left in the rest of the deck

• The deck now contains fewer diamonds than hearts

If you were conducting a survey, in what order would you perform the following tasks? A) analysis; B) observation; C) sample; D) statistic

• B, A, C, D

• C, B, D, A

• C, B, A, D

• A, C, B, D

To see what the average American thinks about the state of the economy, you conduct a poll of your friends and family. How does this constitute a sampling bias?

• Your sample is likely to have less diverse opinions than the entire population of the U.S.

• Your friends and family aren't likely to answer your questions honestly

• Your sample size is far too small

• The questions you ask are likely to be misleading

Which of the following image pairs best represents causality?

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