Mean, Median, Mode and Range

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Mean, Median, Mode and Range

• The Basics of Statistics

Nekela Macon Summer 2009
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Did You Know

• That you probably use statistics such as mean,
  median, mode and range almost every day without
  even realizing it?!?

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Today We Will Learn

• Mean
• Median
• Mode
• Range
• And how to use these in everyday life, as well as
  the classroom!

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To Help You Learn

• You should have a pencil, a piece of paper, and a
  calculator if you need one.
• In addition, we will use two deck of cards and
  student response systems (clickers) to make the
  lesson more engaging.

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What Do We Already Know?

• Sure, the words Mean, Median, Mode and Range
  all sound confusing
• But what about the words we already know, like
  Average, Middle, Most Frequent, and Difference?
• They are all the same ideas!

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Ready to Play
Click on image
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Match
Directions Use the clicker to match each word in
the left column with the correct statistics term
on the right.

• Average
• Middle
• Most Frequent
• Difference

• Mode
• Range
• Median
• Mean

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The Mean, Median, and Mode Card Game Rules

• Using only the ace through 10 cards, deal out 7
  cards to each player.
• (Be sure there is a maximum of 4
  players!)
• Ask each player to arrange their cards in
  sequential order.
• Aces count as the number 1.
• Depending upon which game you want to play,
  follow the directions below
• A. Finding the Mean Game. Each
  player finds the total value of the digits on
  their cards, then divides the total by 7 (the
  total number of cards) to find the mean, which
  represents their point value for that round.
• B. Finding the Median Game. Each
  player finds the median card in their hand and
  that number is their point value for that round.
• C. Finding the Mode Game. Each player finds the
  mode in their hand of cards, which represents
  their point value for that round. If there is no
  mode, then they dont score any points in that
  round. However, if there are two modes (two
  numbers occur the same number of times), then the
  player snags the point values for both modes!
• D. Finding the Range Game. Each player finds
  the range of their hand and that number is the
  point value for that round.
• The winner of the game is the first person who
  scores 30 points.

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Let the Game Begin!
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Question 1
The following table shows the prices of six
laptop computer models.
Laptop Prices
Which statistical measurement does not increase
when a new laptop model that retails for
1,399.99 is added to the table? F. Mode G.
Mean H. Median J. Range
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Question 2
The prices, in dollars, of the cars sold by a
used car salesperson one week are shown
below. 4300, 5400, 3200, 6200, 5400, 5500,
6400 The price of the next car sold by the
salesperson was 14,000. Which measure will
have the greatest change when the price of the
last car sold is included in the list? A. Mean B.
Median C. Mode D. Range