CSD Unit 5

Your school is trying to increase attendance at sports games. What data is LEAST likely to help solve your problem?

• How many people are currently attending

• How much does it cost to attend

• What time do games start and end

• How much the electricity costs per game

• What other events are happening at the same time

You want to find out what your classmates are most excited about this year, so you create a survey. The options are: Dances, Volleyball, Basketball, Band, Concerts, Drama Play and Graduation. When you look at the survey results, you notice some responses don't fit the options. Which of the following responses should be deleted when cleaning the data?

• Thanks for asking!

• Any sports games

• Anything with my friends

• I love listening to band

• Can't wait for graduation!

Given the following cross tabulation of favorite pets and activities, is this statement true or false? "If I like music, I'm mostly likely to like birds."

• True

• False

Given this cross-tabulation, which of the following rules makes the most sense in an algorithm to recommend a vacation spot? (The location with the most points will be recommended)

• If your favorite food is ice cream, add 1 point to National Park. Do not add points to anywhere else.

• If your favorite food is pizza, add 1 point to Beach. Do not add points to anywhere else.

• If your favorite food is salad, add 1 point to Big City and 2 points to National Park.

• If your favorite food is Sandwiches, add 2 points to Beach and 1 point to National Park.

• Randomly select a vacation spot

Which word is best defined as "a way of representing information using only two options"?

• Encode

• Decode

• Pixel

• Binary system

• ASCII

Using this ASCII system, what does the message represent?

• HELLO

• YES

• CSROCKS

• NO

• MAYBE

How would you represent 15 using binary? Remember that gray squares are covering what you don't want to include in your total.

• 10000

• 01111

• 00000

• 01010

• 10101

Some people took a survey about their favorite season and whether they are a morning or night person. Their results are included in the chart. Which of the following represents a cross-tabulation of the data (excluding the names of those surveyed)?

• 
• 
• 
• 
• 

How would you encode the number of classmates you had each period of the school day in binary?

• By writing the number in decimal form

• By using tally marks for each classmate

• By representing each number as a sequence of 0s and 1s

• By writing the number in Roman numerals

To make a better decision about increasing recycling at school, what other information would you want to collect besides the number of recycling cans?

• The number of students and staff using the recycling cans

• The color of the recycling cans

• The brand of the recycling cans

• The location of the nearest landfill