Percent Change in Stock Market Indexes. The following data show the year-to-date percent change (YTD $\%$ Change) for 30 stock-market indexes from around the world (The Wall Street Journal).

a. What index has the largest positive YTD $\%$ Change?

Top U.S. Franchises. Entrepreneur magazine ranks franchises using performance measures such as growth rate, number of locations, startup costs, and financial stability. The number of locations for the top 20 U.S. franchises follow (The World Almanac).

$$\begin{array}{lclc} & \begin{array}{ll} \text { No. U.S. } \\ \text { Locations } \end{array} & \text { Franchise } & \begin{array}{c} \text { No. U.S. } \\ \text { Locations } \end{array} \\ \text { Hampton Inn } & 1,864 & \text { Jan-Pro Franchising Intl. Inc. } & 12,394 \\ \text { ampm } & 3,183 & \text { Hardee's } & 1,901 \\ \text { McDonald's } & 32,805 & \text { Pizza Hut Inc. } & 13,281 \\ \text { 7-Eleven Inc. } & 37,496 & \text { Kumon Math \& Reading Centers } & 25,199 \\ \text { Supercuts } & 2,130 & \text { Dunkin' Donuts } & 9,947 \\ \text { Days Inn } & 1,877 & \text { KFC Corp. } & 16,224 \\ \text { Vanguard Cleaning Systems } & 2,155 & \text { Jazzercise Inc. } & 7,683 \\ \text { Servpro } & 1,572 & \text { Anytime Fitness } & 1,618 \\ \text { Subway } & 34,871 & \text { Matco Tools } & 1,431 \\ \text { Denny's Inc. } & 1,668 & \text { Stratus Building Solutions } & 5,018 \end{array}$$

b. Construct a histogram of these data.

The following data show the year to date percent change (YTD % Change) for 30 stock-market indexes from around the world (The Wall Street Journal).

Prepare a histogram. Interpret the histogram, including a discussion of the general shape of the histogram.

Quantcast.com provides the number of people from the United States who visit a given website. The list below shows the number of U.S. visitors to the 50 most highly visited websites (Quantcast.com website, December 2015).

$$\begin{array}{lclc}\text { Website } & \begin{array}{c}\text { Number of } \\ \text { Visitors in a Month }\end{array} & \text { Website } & \begin{array}{c}\text { Number of } \\ \text { Visitors in a Month }\end{array} \\ \text { about.com } & 31 & \text { mozilla.org } & 24 \\ \text { adobe.com } & 23 & \text { msn.com } & 110 \\ \text { amazon.com } & 72 & \text { nytimes.com } & 23 \\ \text { answers.com } & 67 & \text { paypal.com } & 38 \\ \text { aol.com } & 38 & \text { pinterest.com } & 58 \\ \text { ask.com } & 32 & \text { quizlet.com } & 23 \\ \text { bing.com } & 87 & \text { sascdn.com } & 33 \\ \text { blogger.com } & 31 & \text { smartyads.com } & 24 \\ \text { blogspot.com } & 27 & \text { southwest.com } & 28 \\ \text { bustle.com } & 23 & \text { stackexchange.com } & 25 \\ \text { buzzfeed.com } & 68 & \text { tumblr.com } & 25 \\ \text { craigslist.org } & 26 & \text { twitter.com } & 198 \\ \text { curiositystream.com } & 40 & \text { urbandictionary.com } & 28 \\ \text { ebay.com } & 58 & \text { urbanoutfitters.com } & 39 \\ \text { facebook.com } & 129 & \text { videoamp.com } & 89 \\ \text { footlocker.ca } & 23 & \text { walmart.com } & 25 \\ \text { foxnews.com } & 26 & \text { wayfair.com } & 24 \\ \text { go.com } & 23 & \text { weather.com } & 40 \\ \text { godaddy.com } & 32 & \text { whitepages.com } & 26 \\ \text { google.com } & 220 & \text { wikia.com } & 41 \\ \text { linkedin.com } & 39 & \text { wikipedia.org } & 46 \\ \text { live.com } & 49 & \text { wordpress.com } & 35 \\ \text { lowermybills.com } & 30 & \text { yahoo.com } & 43 \\ \text { microsoft.com } & 67 & \text { yelp.com } & 73 \\ \text { monster.com } & 40 & \text { youtube.com } & 222 \\ & & & \end{array}$$

Summarize the data by constructing the following:

e. Show a histogram. Comment on the shape of the distribution.

The economy of Macro Island is described by the following data:

• Labor's share of income is one-third.
• Output grows by 8 percent per year.
• The capital stock grows by 9 percent per year.
• The labor force grows by 3 percent per year.

Given these data, we know that total factor productivity grows by _________ percent per year.

a. 1

b. 2

c. 3

d. 4

A survey of gas prices in January showed that the cost per gallon one year was $2.649. The following January, the cost per gallon was$2.999. Find the percent change in gas prices from one year to the next to the nearest tenth.

If the prices of all products are rising at 20 percent per year and your employer gives you a 20 percent salary increase, are you better off, worse off, or equally well off in comparison with your situation a year ago?

On Monday, a stock market index goes up 5.00%. On Tuesday, the index goes down 5.00%. What is the net percentage change in the index for the two days?

Consider the following data.

$$\begin{matrix} \text{14} & \text{21} & \text{23} & \text{21} & \text{16}\\ \text{19} & \text{22} & \text{25} & \text{16} & \text{16}\\ \text{24} & \text{24} & \text{25} & \text{19} & \text{16}\\ \text{19} & \text{18} & \text{19} & \text{21} & \text{12}\\ \text{16} & \text{17} & \text{18} & \text{23} & \text{25}\\ \text{20} & \text{23} & \text{16} & \text{20} & \text{19}\\ \text{24} & \text{26} & \text{15} & \text{22} & \text{24}\\ \text{20} & \text{22} & \text{24} & \text{22} & \text{20}\\ \end{matrix}$$

Develop a frequency distribution using classes of 12–14, 15–17, 18–20, 21–23, and 24–26.

In alphabetical order, the six most common last names in the United States are Brown, Davis, Johnson, Jones, Smith, and Williams (The World Almanac, 2006). Assume that a sample of 50 individuals with one of these last names provided the following data.

$$\begin{matrix} \text{Brown} & \text{Williams} & \text{Williams} & \text{Williams} & \text{Brown}\\ \text{Smith} & \text{Jones} & \text{Smith} & \text{Johnson} & \text{Smith}\\ \text{Davis} & \text{Smith} & \text{Brown} & \text{Williams} & \text{Johnson}\\ \text{Johnson} & \text{Smith} & \text{Smith} & \text{Johnson} & \text{Brown}\\ \text{Williams} & \text{Davis} & \text{Johnson} & \text{Williams} & \text{Johnson}\\ \text{Williams} & \text{Johnson} & \text{Jones} & \text{Smith} & \text{Brown}\\ \text{Johnson} & \text{Smith} & \text{Smith} & \text{Brown} & \text{Jones}\\ \text{Jones} & \text{Jones} & \text{Smith} & \text{Smith} & \text{Davis}\\ \text{Davis} & \text{Jones} & \text{Williams} & \text{Davis} & \text{Smith}\\ \text{Jones} & \text{Johnson} & \text{Brown} & \text{Johnson} & \text{Davis}\\ \end{matrix}$$

Summarize the data by constructing the following:

Relative and percent frequency distributions

The response to a question has three alternatives: A, B, and C. A sample of 120 responses provides 60 A, 24 B, and 36 C. Show the frequency and relative frequency distributions.

The following data show the year to date percent change (YTD % Change) for 30 stock-market indexes from around the world (The Wall Street Journal).

What index has the largest positive YTD % Change?

Alisha walked $\frac { 1 } { 4 }$ mile to the library and then $\frac { 3 } { 8 }$ mile to the post office. What is the total distance Alisha walked?

Explain the difference between a bar graph and a histogram.