Bar charts are particularly useful for showing change over time.  

In which graphic are there no gaps between bars?

A line graph displays the ____________________.

Although bar charts are often used to show means, this text recommends that __________ be used instead.

Not all visualizations are created equal, however, and in many cases the type of visualization used may distract or even mislead the reader.

A student was asked to collect the temperature daily for the month of May, 2010 and conduct some simple analysis. He found the variance of temperatures during May was 4, so the standard deviation of the temperature was___

Quantitative data is measured on a numeric scale while qualitative data has no order or measuring.

Can blueberries slow down aging? A study indicates that antioxidants found in blueberries may slow down the process of aging. In the study, 19-month old rats (equivalent to 60-year old humans) were fed either their standard diet or a diet supplemented by either blueberry, strawberry, or spinach powder. After eight weeks, the rats were given memory and motor tests. Although all supplemented rats showed improvement, those supplemented with blueberry powder showed the most notable improvement. What is/are the dependent variable (s)?

In the following data set, what number is the outlier? 6, 24, 27, 32, 34, 22

10 students participate in Statistics quiz 2, their grades are: 98, 85,89,73,76,85,87,92,85,56The professor wants to know the interquartile range of the grades. The interquartile range is ___.