Information and IdeasEasy–MediumMean of four values
Information and Ideas practice question
Height of four plants after one month:
Plant A: 22 cm
Plant B: 17 cm
Plant C: 25 cm
Plant D: 19 cm
Which choice most accurately completes the statement? 'The average height of the four plants was ____ cm.'
- A. 20.75Correct
- B. 21
- C. 22
- D. 20
Answer: A. 20.75
22 + 17 + 25 + 19 = 83, and 83/4 = 20.75.
Why the other answers are wrong
- B. 21
- 21 is the mean rounded to the nearest whole number; the exact mean is 83/4 = 20.75.
- C. 22
- 22 is Plant A's height.
- D. 20
- 20 rounds the mean down; the data give 20.75 exactly.
More Information and Ideas questions
- Easy–Medium
Which choice most logically completes the text? - Easy–Medium
According to the text, which statement is true of the monarch migration? - Easy–Medium
According to the text, which statement about the Great Barrier Reef is true? - Easy–Medium
According to the text, what does the duration of the waggle dance indicate? - Easy–Medium
According to the text, what was one purpose of the 1976 voyage of the Hōkūleʻa? - Easy–Medium
Which finding, if true, would most directly weaken the researchers' hypothesis?
Not affiliated with the College Board. SAT is a trademark of the College Board.