* not completed

. What measure of variability takes into account every data point in a set?

The range correct incorrect

The interquartile range correct incorrect

The standard deviation correct incorrect

All of the above correct incorrect

* not completed

. Consider the following dataset: 3, 4, 7, 7, 8, 9, 10, 13, 18, 19, 19, 20, 21, 24, 24, 25. What is the range of the dataset?

19 correct incorrect

25 correct incorrect

23 correct incorrect

22 correct incorrect

* not completed

. Why is the interquartile range more sensitive than the range?

The interquartile range takes into account 1 extra piece of information. correct incorrect

The interquartile range takes into account the standard deviation. correct incorrect

The interquartile range tells us more about the middle of the data, and uses more data points. correct incorrect

The interquartile range uses more of the data and takes into account the mean and mode of the entire dataset. correct incorrect

* not completed

. How is variance best defined?

the sum of deviation scores from the mean. correct incorrect

the average squared deviation from the mean. correct incorrect

the sum of square deviation from the mean. correct incorrect

the average deviation from the mean. correct incorrect

* not completed

. Imagine a data set with 20 observations. Each observation is now multiplied by 10. Which of the following will occur?

The standard deviation will stay the same correct incorrect

The standard deviation will be 10 times larger correct incorrect

The standard deviation will increase, but unpredictably correct incorrect

The standard deviation will not change correct incorrect