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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?
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?