Question

dan wants to find the average height of students in the 12th grade at west high school. so he will use a sample of students in the 12th grade to find the average height. answer the questions below. (a) which unit(s) could be used for the unit of measurement? check all that apply. minutes meters centimeters millimeters seconds (b) which of the procedures below would be the best way to find the average height? randomly pick 5 students from the 12th grade and have them state their own heights. randomly pick 35 students from the 12th grade and measure their heights. measure the heights of 5 volunteers from the 12th grade. ask for 35 volunteers from the 12th grade to state their own heights.

Explanation:

For part (a), height is a length measurement. Meters, centimeters, and millimeters are units of length. Minutes and seconds are units of time. For part (b), a larger random sample (35 students) that is measured (to avoid self - reporting inaccuracies) is better. Randomly picking 35 students and measuring their heights gives a more representative and accurate sample.

Answer:

(a) meters, centimeters, millimeters.
(b) Randomly pick 35 students from the \(12^{th}\) grade and measure their heights.