Here is some information about the tallest buildings in the world as of February 2017. Identify the individuals and variables in this data set. Classify each variable as categorical or quantitative.

$$\begin{array}{l} \text{ } & \text{ } & \text{Height} & \text{ } & \text{ } & \text{Year }\\ \text{Building } & \text{Country} & \text{(m)} & \text{Floors} & \text{Use} & \text{completed}\\ \hline \text{Burj Khalifa} & \text{United Arab} & \text{828.0} & \text{163} & \text{Mixed} & \text{2010}\\ \text{ } & \text{Emirates} & \text{ ---} & \text{ } & \text{ } & \text{ }\\ \text{Shanghai Tower} & \text{China} & \text{632.0} & \text{121} & \text{Mixed} & \text{2014}\\ \text{Makkah Royal } & \text{Saudi} & \text{601.0} & \text{120} & \text{Hotel} & \text{2012}\\ \text{Clock Tower Hotel} & \text{Arabia} & \text{ } & \text{ } & \text{ }\\ \text{Ping An Finance } & \text{China} & \text{599.0} & \text{115} & \text{Mixed} & \text{2016}\\ \text{Center} & \text{ } & \text{ } & \text{ } & \text{ } & \text{ }\\ \text{Lotte World} & \text{South} & \text{554.5} & \text{123} & \text{Mixed} & \text{2016}\\ \text{Tower} & \text{Korea} & \text{ } & \text{ } & \text{ }\\ \text{One World Trade} & \text{United} & \text{541.0} & \text{104} & \text{Office} & \text{2013}\\ \text{Center} & \text{States} & \text{ } & \text{ } & \text{ }\\ \text{Taipei 101 } & \text{Taiwan} & \text{509.0} & \text{101} & \text{Office} & \text{2004}\\ \text{Shanghal World} & \text{China} & \text{492.0} & \text{101} & \text{Mixed} & \text{2008}\\ \text{Financial Center} & \text{ } & \text{ } & \text{ } & \text{ }\\ \text{Intemational} & \text{China} & \text{484.0} & \text{118} & \text{Mixed} & \text{2010}\\ \text{Commerce} & \text{ } & \text{ } & \text{ } & \text{ }\\ \text{Center} & \text{ } & \text{ } & \text{ } & \text{ }\\ \text{Petronas Tower 1} & \text{Malaysia} & \text{452.0} & \text{88} & \text{Office} & \text{1998}\\ \end{array}$$

Students in a high school statistics class were given data about the favorite sport to play for a group of 35 girls. They produced the following pictograph. Explain how this graph is misleading.

There are 21 students in your class. The teacher wants to send 4 students to the library each day. The teacher will choose the students to go to the library at random each day for the first four days from the list of students who have not already gone. Answer each question.

What is the probability you will be chosen to go on the first day?

Many people like to ride roller coasters. Amusement parks try to increase attendance by building exciting new coasters. The following table displays data on several roller coasters that were opened in a recent year.

$$\begin{array}{l} \text{Roller} & \text{ } & \text{Height} & \text{ } & \text{Speed} & \text{Duration}\\ \text{coaster} & \text{Type} & \text{(ft)} & \text{Design} & \text{(mph)} & \text{(sec)}\\ \hline \text{Wildfire} & \text{Wood} & \text{187.0} & \text{Sit down} & \text{70.2} & \text{120}\\ \text{Skyline} & \text{Steel} & \text{131.3} & \text{Inverted} & \text{50.0} & \text{90}\\ \text{Goliath} & \text{Wood} & \text{165.0} & \text{Sit down} & \text{72.0} & \text{105}\\ \text{Hellx} & \text{Steel} & \text{134.5} & \text{Sit down} & \text{62.1} & \text{130}\\ \text{Banshee} & \text{Steel} & \text{167.0} & \text{Inverted} & \text{68.0} & \text{160}\\ \text{Black Hole} & \text{Steel} & \text{22.7} & \text{Sit down} & \text{25.5} & \text{75}\\ \end{array}$$

What are the variables? Classify each as categorical or quantitative.

Vince York practices medicine under the business title Vince York, M.D. During July, the medical practice completed the following transactions:

• Jul. 1 - York contributed $63,000 cash to the business in exchange for common stock.
•         5 - Paid monthly rent on medical equipment,$510.
•         9 - Paid $23,000 cash to purchase land to be used in operations.
•       10 - Purchased office supplies on account,$1,600.
•       19 - Borrowed $22,000 from the bank for business use.
•       22 - Paid$1,100 on account.
•       28 - The business received a bill for advertising in the daily newspaper to be paid in August, $240.
•       31 - Revenues earned during the month included$6,400 cash and $6,000 on account.
•       31 - Paid employees' salaries$2,200, office rent $1,900, and utilities$560. Record as a compound entry.
•       31 - The business received $1,120 for medical screening services to be performed next month.
•       31 - Paid cash dividends of$7,200.

The business uses the following accounts: Cash; Accounts Receivable; Office Supplies; Land; Accounts Payable; Advertising Payable; Unearned Revenue; Notes Payable; Common Stock; Dividends; Service Revenue; Salaries Expense; Rent Expense; Utilities Expense; and Advertising Expense.

Requirements

1. Journalize each transaction. Explanations are not required.
2. Post the journal entries to the T-accounts, using transaction dates as posting references in the ledger accounts. Label the balance of each account Bal.
3. Prepare the trial balance of Vince York, M.D., as of July 31, 2018.

Here is a pie chart of Census Bureau data to show the countries from which the more than 17 million Asians in the United States descend. About what percent of Asians were of Chinese origin? Korean?

How can we help wood surfaces resist weathering, especially when restoring historic wooden buildings? In a study of this question, researchers prepared wooden panels and then exposed them to the weather. Here are some of the variables recorded: type of wood (yellow poplar, pine, cedar); type of water repellent (solvent-based, water-based); paint thickness (millimeters); paint color (white, gray, light blue); weathering time (months). Identify each variable as categorical or quantitative.

E-mail spam is the curse of the Internet. Here is a relative frequency table that summarizes data on the most common types of spam.

$$\begin{array}{|l|c|l|c|} \hline \begin{array}{l} \text { Type of } \\ \text { spam } \end{array} & \text { Percent } & \begin{array}{l} \text { Type of } \\ \text { spam } \end{array} & \text { Percent } \\ \hline \text { Adult } & 19 & \text { Leisure } & 6 \\ \hline \text { Financial } & 20 & \text { Products } & 25 \\ \hline \text { Health } & 7 & \text { Scams } & 9 \\ \hline \text { Internet } & 7 & \text { Other } & ? ? \\ \hline \end{array}$$

Would it be appropriate to make a pie chart of these data? Explain.

The most popular colors for compact and sports cars in a recent year are given in the table.

Color, Percentage Silver, 19 Black/black effect, 17 Gray, 17 Blue, 15 Red, 12 White/white pearl, 12 Beige/brown, 3 Yellow/gold, 2 Green, 2 Other, 1

Use an appropriate graphical display to describe these data.

Explain why the frequency bar graph and the relative frequency bar graph for a data set have a similar appearance.

According to the Internet Movie Database, Avatar is tops based on box-office receipts worldwide. The table displays data on several popular movies. Identify the individuals and variables in this data set. Classify each variable as categorical or quantitative.

$$\begin{array}{|l|l|l|l|l|l|} \hline \text { Movie } & \text { Year } & \text { Rating } & \begin{array}{l} \text { Time } \\ \text { (min) } \end{array} & \text { Genre } & \text{ Box office (\$) } \\ \hline \text { Avatar } & 2009 & \mathrm{PG}-13 & 162 & \text { Action } & 2,783,918,982 \\ \hline \text { Titanic } & 1997 & \mathrm{PG}-13 & 194 & \text { Drama } & 2,207,615,668 \\ \hline \begin{array}{l} \text { Star Wars: } \\ \text { The Force } \\ \text { Awakens } \end{array} & 2015 & \mathrm{PG}-13 & 136 & \text { Adventure } & 2,040,375,795 \\ \hline \begin{array}{l} \text { Jurassic } \\ \text { World } \end{array} & 2015 & \mathrm{PG}-13 & 124 & \text { Action } & 1,669,164,161 \\ \hline \begin{array}{l} \text { Marvel's The } \\ \text { Avengers } \end{array} & 2012 & \mathrm{PG}-13 & 142 & \text { Action } & 1,519,479,547 \\ \hline \text { Furious } 7 & 2015 & \mathrm{PG}-13 & 137 & \text { Action } & 1,516,246,709 \\ \hline \begin{array}{l} \text { The Aveng- } \\ \text { ers: } \text {Age of} \\ \text {Ultron} \end{array} & 2015 & \mathrm{PG}-13 & 141 & \text { Action } & 1,404,705,868 \\ \hline \begin{array}{l} \text { Harry Potter } \\ \text { and the } \\ \text { Deathly } \\ \text { Hallows: } \\ \text { Part } 2 \end{array} & 2011 & \mathrm{PG}-13 & 130 & \text { Fantasy } & 1,328,111,219 \\ \hline \text { Frozen } & 2013 & \mathrm{PG} & 108 & \text { Animation } & 1,254,512,386 \\ \hline \text { Iron } \mathrm{Man} 3 & 2013 & \mathrm{PG}-13 & 129 & \text { Action } & 1,172,805,920 \\ \hline \end{array}$$

Here are data on the lengths of the first 25 words on a randomly selected page from Harry Potter and the Prisoner of Azkaban.

$$\begin{array}{lllllllllllllll} 2 & 3 & 4 & 10 & 2 & 11 & 2 & 8 & 4 & 3 & 7 & 2 & 7 \\ 5 & 3 & 6 & 4 & 4 & 2 & 5 & 8 & 2 & 3 & 4 & 4 & \end{array}$$

Make a dotplot of these data.

Here is some information about the first 10 U.S. presidents. Identify the individuals and variables in this data set. Classify each variable as categorical or quantitative.

$$\begin{array}{|l|c|c|c|c|} \hline \text { Name } & \begin{array}{c} \text { Political } \\ \text { party } \end{array} & \begin{array}{c} \text { Age at } \\ \text { inaug. } \end{array} & \begin{array}{c} \text { Age at } \\ \text { death } \end{array} & \begin{array}{c} \text { State } \\ \text { of birth } \end{array} \\ \hline \text { G. Washington } & \text { Federalist } & 57 & 67 & \text { Virginia } \\ \hline \text { J. Adams } & \text { Federalist } & 61 & 90 & \text { Massachusetts } \\ \hline \text { T. Jefferson } & \begin{array}{l} \text { Democratic- } \\ \text { Republican } \end{array} & 57 & 83 & \text { Virginia } \\ \hline \text { J. Madison } & \begin{array}{l} \text { Democratic- } \\ \text { Republican } \end{array} & 57 & 85 & \text { Virginia } \\ \hline \text { J. Monroe } & \begin{array}{l} \text { Democratic- } \\ \text { Republican } \end{array} & 58 & 73 & \text { Virginia } \\ \hline \text { J. Q. Adams } & \begin{array}{l} \text { Democratic- } \\ \text { Republican } \end{array} & 57 & 80 & \text { Massachusetts } \\ \hline \text { A. Jackson } & \text { Democrat } & 61 & 78 & \text { South Carolina } \\ \hline \text { M. Van Buren } & \text { Democrat } & 54 & 79 & \text { New York } \\ \hline \text { W. H. Harrison } & \text { Whig } & 68 & 68 & \text { Virginia } \\ \hline \text { J. Tyler } & \text { Whig } & 51 & 71 & \text { Virginia } \\ \hline \end{array}$$

The tallest building in the world is Taipei 101 in Taiwan. Its height is 0.509 km. The tallest building in North America is the Sears Tower in Chicago, USA. Its height is 0.442 km. What is the difference in the heights of the buildings?