每日一题

Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

A paleontologist estimated the body mass of a Stegosaurus from a skeleton using several methods. The estimated masses in kilograms (kg) were:

1082kg
1560kg
2256kg
2355kg
3751kg

To the nearest kg, what is the mean estimate of the Stegosaurus's body mass?

Select answer

(A) 2201kg
(B) 2256kg
(C) 2417kg
(D) 2669kg

答案和解析

答案：A

解析：

Choice A is correct. To find the mean, first find the sum of all the body mass estimates, then divide by the total number of estimates. To the nearest kilogram, the mean of the body mass estimates of the Stegosaurus is 2201 kg.