Test Review

Find the mode:
5, 0, 9, 9, 3, 0, 5, 5, 4

• 9
• 5
• 3
• 7

What is the definition of the range?

• The average
• The number that occurs the most
• The middle number
• The difference of the largest and smallest numbers

Find the mean:
3.8, 4.2, 4.0, 4.2, 4.2

• 4.08
• 20.4
• 5.1
• 4.2

Find the range:
24, 33, 43, 44, 23, 41, 40

• 17
• 21
• 35
• 20

Find the mean of the countries' research and development spending.

• 21.86 billion
• 218.6 billion
• 3.5 billion
• 79.1 billion

Another name for the "mean"

• Middle number
• Average
• Number that repeats the most
• Rude

What is the first thing you should do before finding the median or the mode?

• Start crossing numbers off
• Put numbers in order from least to greatest
• List the numbers how they are
• Look for repeats

What is the mode of the data set:
Black  Blue  Red
Pink  Black  Black
Gray  Green  Blue
Blue  Blue  Red
Yellow  Blue  Red

• Blue and Black
• Blue
• Red
• Black

A data set can have more than one mode

• True
• False

If there is an even number of data in the data set how do you find the median?

• order the data and find the middle value
• order the data add the 2 middle values and divide by 2