Mean Median Mode and Quartiles

Another name for the "mean"

• Middle number

• Average

• Number that repeats the most

• Rude

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

What is the mean of the data set:
8.9, 9.4, 8.6, 9.1

• 8.5

• 8.9

• 9

• 9.1

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 third quartile?

• 7

• 6

• 8

• 3

What is the third quartile? (3Q)

The table shows the points scored by the JV basketball team at Cox Mill High School in their first seven games. Calculate the mean, median, mode and range. Which statistical measure makes the team sound the best?

• Mean

• Median

• Mode

• Range

What is the first quartile?

• 4

• 5

• 6

• 7

Ms. Andrey claims the average score on a quiz in her class was 25. Mr. Luna claims the average score on a quiz in his class is 25.

• Ms. Andrey used the mode, while Mr. Luna used the median.

• Ms. Andrey used the mean, while Mr. Luna used the mode.

• Both teachers used the mean.

• Both teachers used the median.

What is the lower quartile?

• 48.5

• 67

• 45

• 52