3. Describing Data Numerically

Which of the following is not a property of the $standarddeviation$?

$$Standard deviation is a measure of which one of the following?$$

If a sample has a standard deviation of $0$, what does this indicate about the data values in the sample?

Which of the following best explains why the $\mathrm{range}$ is less desirable than the $\mathrm{standard\; deviation}$ as a measure of dispersion?

As the standard deviation $\sigma$ decreases, what happens to the graph of the normal distribution curve?

Graphical Analysis In Exercises 21–24, you are asked to compare three data sets.

(c) Estimate the sample standard deviations. Then determine how close each of your estimates is by finding the sample standard deviations.

i.

ii.

iii.

Given the mean of a normal distribution, which of the following best describes the $standard deviation$?

Buying a Car The following data represent the asking price, in dollars, for a random sample of 2014 coupes (a two-door car) and a random sample of 2014 Chevy Camaros.

b. Explain why the mean is higher for Camaros yet the standard deviation is less.

Which of the following best describes the effect of outliers on the $standarddeviation$ of a data set?

Given the following two samples: Sample 1: $5,7,9$ and Sample 2: $4,6,8$, what is the value of the pooled standard deviation $s_p$ for these data sets?

The standard deviation is used in conjunction with the $\mathrm{mean}$ to describe which aspect of a data set?

Which of the following is not a property of the $F$ distribution?

Given four samples, each with the same sample mean but different sample sizes and standard deviations, which of the following samples will have the smallest value for the estimated standard error of the mean ($\frac{s}{\sqrt{n}}$)?

Which of the following statements is true about $standarddeviation$?