Question
Keisha wants to find the average height of students in the \( 12^{\text {average height. }} \) grade at East High School. So she will use a sample of students in the 12 grade to find the Answer the questions below. \( \begin{array}{l}\text { (a) Which unit(s) could be used for the unit of measurement? Check all that apply. } \\ \square \text { minutes } \square \text { feet } \\ \text { (b) Which of the procedures below would be the best way to find the average height? } \\ \text { Randomly pick } 50 \text { students from the } 12^{\text {th }} \text { grade and measure their heights. } \\ \text { Randomly pick } 5 \text { students from the } 12^{\text {th }} \text { grade and have them state their own heights. } \\ \text { Ask for } 50 \text { volunteers from the } 12^{\text {th }} \text { grade to state their own heights. } \\ \text { Measure the heights of } 5 \text { volunteers from the } 12^{\text {th }} \text { grade. }\end{array} \)
Ask by Knight Chandler. in the United States
Mar 17,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
**(a) Units of measurement:** feet
**(b) Best procedure:** Randomly pick 50 students from the 12th grade and measure their heights.
Solution
1. **(a) Units of measurement**
To measure height, we need a unit of length. Out of the options provided, only
\[
\text{feet}
\]
is a unit of length. Minutes are a unit of time and do not apply here.
2. **(b) Best procedure to find the average height**
The goal is to obtain a representative sample of the 12th grade students' heights. The best method should avoid bias and include a sufficiently large number of students. Among the options provided, the best procedure is to
\[
\text{randomly pick 50 students from the 12th grade and measure their heights.}
\]
This approach ensures that the sample is random and the measurements are taken directly, reducing errors related to self-reporting or selection bias.
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Simplify this solution The Deep Dive
Feet is the best unit of measurement for height since it perfectly captures the size we're measuring. Minutes don't quite match; we wouldn't want to compare how tall someone is to how long something takes! The best way to find the average height of the students would be to randomly pick 50 students from the 12th grade and measure their heights. This method reduces bias and gives a more accurate representation of the entire grade compared to relying on self-reported heights or a small group of volunteers. So, go for randomness and the more, the merrier!
