Assume the true value of the speed of sound in air at 20 oC is 343.5 m/s. Three
ID: 2163469 • Letter: A
Question
Assume the true value of the speed of sound in air at 20 oC is 343.5 m/s. Three students named Abe, Barb, and Cal make the following measurements in m/s of the speed of sound in air at 20 oC.Abe: 357.4, 339.6, 346.2, 349.2 Barb: 322.6, 324.7, 323.5, 326.9
Cal: 340.6, 347.6, 342.6, 345.8
a) Find the average of each student's measurements. A: ________B: ________C: ________
b) Which student has the most accurate measurements?
c) Which student has the most precise measurements?
d) Which student(s), if any, seems to have a systematic error?
e) What type of error is assumed to be the basis for the statistical
variations in the measurements?
Explanation / Answer
a)A- 348.1 B=326.9 C=344.15 b)B= 326.9 c)B=326.9 d)C=344.15 e)calibration error of the instrument