Problem-Solving and Data AnalysisEasyWhat a mean hides
Problem-Solving and Data Analysis practice question
A school reports that the mean score on a test was 70. A parent concludes that every pupil scored about 70. What is wrong with the parent's conclusion?
- A. A mean says nothing about how spread out the scores are; some may be far above or below 70.Correct
- B. Means are always wrong.
- C. The school should have reported the highest score only.
- D. 70 is not a possible mean.
Answer: A. A mean says nothing about how spread out the scores are; some may be far above or below 70.
The average can come from scores that vary widely.
Why the other answers are wrong
- B. Means are always wrong.
- Means are useful, just incomplete.
- C. The school should have reported the highest score only.
- The highest score would say even less.
- D. 70 is not a possible mean.
- 70 is a perfectly possible mean.
More Problem-Solving and Data Analysis questions
- Easy
What is 40% of 150? - Easy
A class has 25 students, and 60% of them play a sport. How many students play a sport? - Easy
A runner covers 3 kilometers. Given that 1 kilometer equals 1000 meters, how many meters is this? - Easy
What is the range of the number of hours worked by these 6 volunteers? - Easy
A shirt has a price of $24.00. A sales tax of 8% of the price is added to the price. What is the total cost, i… - Easy
If one of these 80 students is selected at random, what is the probability that the student chose Music?
Not affiliated with the College Board. SAT is a trademark of the College Board.