STAT MISC SOPHIA MILESTONE
STATS UNIT 2025/ 2026 QUESTIONS
WITH VERIFIED ANSWERS
1. A research team conducts a survey to determine the area of land used for farming in
Iowa. The team randomly selects house addresses and sends the survey by mail.
2. Which type of sampling method is the research team using? - correct answer -Simple
random sampling
3. Which of the following data types will be continuous? - correct answer -The total weight
of apples harvested in the farm in a season
4. Jenae's study ignored the fact that only some of her coffee choices had caffeine, even
though her co-workers preferred caffeinated coffee. Therefore, Jenae decided to label
one type of decaffeinated coffee as having caffeine to see what would happen.
5. As she anticipated, this coffee became more popular with her co-workers, and they
claimed that the extra boost of caffeine helped them focus on their work.
6. The growing popularity of the decaffeinated coffee among co-workers, under the false
impression that it gave them extra caffeine, is an example of ________. - correct answer
-The placebo effect
7. James conducts a survey to study the relationship between cell phone use and grades
earned during the fall semester. James suspects that there might be a lot of other factors
that affect grades besides cell phones.
8. Which of the following could be a confounding variable in James's study? - correct
answer -Time spent studying
, 9. To determine what percentage of 376 teachers at a university were female, Ryan
randomly selected 14 teachers. He then collected and analyzed his data.
10. Select the statement that is TRUE. - correct answer -There are 14 teachers in Ryan's
sample, and 376 teachers are in the population.
11. A poll conducted a week before the school election to the student council showed that
Janice would win with 63% of the vote. The margin of error was 14%.
12. If Janice needs to receive at least half the votes to win the election, can we be confident
of Janice's victory? - correct answer -No, because she could receive as low as 49% of the
vote.
13. A survey result shows that cell phone usage among teenagers rose from 63% in 2006 to
71% in 2008.Of the following choices, which two statements about cell phone use
among teenagers is true? - correct answer -Cell phone usage rose by 8 percentage
points.Cell phone usage rose by 12.7%
14. A shoe retailer decides to record the styles and sizes of shoes that his customers choose.
He records this data for an entire year by keeping track of his customers' purchases.
15. Which statement accurately describes the type of data the shoe retailer is collecting? -
correct answer -The shoe retailer is gathering raw data because he is recording shoe
sizes and styles by himself.
16. Jenae brewed each coffee flavor using an identical coffee maker model, the same water
source, and the same mass of ground coffee.
STATS UNIT 2025/ 2026 QUESTIONS
WITH VERIFIED ANSWERS
1. A research team conducts a survey to determine the area of land used for farming in
Iowa. The team randomly selects house addresses and sends the survey by mail.
2. Which type of sampling method is the research team using? - correct answer -Simple
random sampling
3. Which of the following data types will be continuous? - correct answer -The total weight
of apples harvested in the farm in a season
4. Jenae's study ignored the fact that only some of her coffee choices had caffeine, even
though her co-workers preferred caffeinated coffee. Therefore, Jenae decided to label
one type of decaffeinated coffee as having caffeine to see what would happen.
5. As she anticipated, this coffee became more popular with her co-workers, and they
claimed that the extra boost of caffeine helped them focus on their work.
6. The growing popularity of the decaffeinated coffee among co-workers, under the false
impression that it gave them extra caffeine, is an example of ________. - correct answer
-The placebo effect
7. James conducts a survey to study the relationship between cell phone use and grades
earned during the fall semester. James suspects that there might be a lot of other factors
that affect grades besides cell phones.
8. Which of the following could be a confounding variable in James's study? - correct
answer -Time spent studying
, 9. To determine what percentage of 376 teachers at a university were female, Ryan
randomly selected 14 teachers. He then collected and analyzed his data.
10. Select the statement that is TRUE. - correct answer -There are 14 teachers in Ryan's
sample, and 376 teachers are in the population.
11. A poll conducted a week before the school election to the student council showed that
Janice would win with 63% of the vote. The margin of error was 14%.
12. If Janice needs to receive at least half the votes to win the election, can we be confident
of Janice's victory? - correct answer -No, because she could receive as low as 49% of the
vote.
13. A survey result shows that cell phone usage among teenagers rose from 63% in 2006 to
71% in 2008.Of the following choices, which two statements about cell phone use
among teenagers is true? - correct answer -Cell phone usage rose by 8 percentage
points.Cell phone usage rose by 12.7%
14. A shoe retailer decides to record the styles and sizes of shoes that his customers choose.
He records this data for an entire year by keeping track of his customers' purchases.
15. Which statement accurately describes the type of data the shoe retailer is collecting? -
correct answer -The shoe retailer is gathering raw data because he is recording shoe
sizes and styles by himself.
16. Jenae brewed each coffee flavor using an identical coffee maker model, the same water
source, and the same mass of ground coffee.
