Data, Statistics, and Probability Test

The mean number of aircraft orders for the six years shown on the graph is 573 planes. In which year was the number of orders closest to the mean?

• 2006

• 2007

• 2008

• 2009

By about what percent did orders at National Aircraft decrease from 2008 to 2009?

• 30%

• 40%

• 68%

• 75%

At a convention, Jim and his three friends each bought three raffle tickets. At the time of the drawing, 400 tickets had been sold. What is the probability that either Jim or one of his friends will win?

• 3/100

• 1/25

• 3/50

• 9/100

Based on the data in the table, what was the median low temperature (in degree fahrenheit) for March 9?

• 62.8

• 51.5

• 50.8

• 50

What was the mean amount of precipitation (in inches) on March 9 for the areas listed in the table?

• 0.65

• 1.09

• 1.56

• 1.99

For which area on the table was there the greatest range, or difference, between the high and low temperatures?

• Ventura

• East Village

• Woodland Hills

• Downtown

Platinum Cinemas opened its first theaters in 2001. The company's ticket sales increased steadily until what year, when was the first drop in sales?

• 2003, 2004

• 2004, 2005

• 2007, 2008

• 2008, 2009

Which year had the sharpest increase in ticket sales over the previous year?

• 2002

• 2006

• 2008

• 2009

At Nelson Stationers, the first 25 customers who visited the store on Monday morning received their choice of a gift. The table below shows how many customers chose each gift.

What percent of the customers chose a mouse pad?

• 17%

• 25%

• 32%

• 33 1/3%

A standard deck of playing cards has 52 cards, with 13 cards each of hearts, diamonds, clubs, and spades. If a card is drawn randomly from the deck, what is the probability that it will be either hearts or diamonds?

• 1 in 2

• 1 in 4

• 1 in 8

• 1 in 16