PART 2: How many of each color are there in the
mystery bag of M
& M's? What's the
percent distribution of the colors?
- BEFORE
opening you bag of "M&M's"®, predict the total (how many) and the
distribution of colors (how many of each are color) are in the bag. Use
the table below to enter your information:
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Colors
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Predictions
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Actual Amounts
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Fraction
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Percent
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Blue
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Brown
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Green
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Orange
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Red
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Yellow
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Totals:
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- Calculate
the fraction for each of the colors. For example, if there were 6 red
M&M's in a bag of 30, then the fraction would be 6/30
- Now,
use the Percent Equation to calculate the percent for each of the
colors of M&M's. Fill in the Percent column with this information.
- Do your
percentages equal 100%? Why is this important?
- In the
table below, enter the class totals and calculate the Class percents
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Colors
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Class Amounts
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Blue
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Brown
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Green
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Orange
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Red
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Yellow
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Class Total:
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PART 3: Using a Spreadsheet to calculate Percent
Open candycircles.xls
in a spreadsheet application (such as Excel).
- Enter the Class Amounts
the class calculated in Column B. For example, click the mouse in Cell
B2 and enter the class total amount of Blue M&M's. Continue for the
other colors.
- Now, click your mouse in Cell C2
and enter =B2/B8 as in the image to the right. This
will calculate the class percent of Blue M&M's.
- Continue with the other cells. For
example, enter =B3/B8 in Cell C3, =B4/B8 in Cell C4, etc.
- What's happening? Why?
- What is B8?
- Why did we make B8 the
denominator in all the class percents?
PART
4: Use a Spreadsheet to create a Circle Graph
Circle graphs represent the entire amount, or 100% of a certain data,
which is then split into parts proportional in size to the amount that
each part represents.
- Use your
mouse to Highlight all the information from Cells A1 to Cell B7.Do
this by clicking on cell A1 and dragging down and across to cell B7.
Once the data
is highlighted, find the Chart Wizard button
and
click it.
- Select Pie
from the list of Chart Types and click Finish
- Click Next
on the next screen
- Slowly
click twice on each of the circle slices (pieces) until the
individual piece is selected as in the image to the right. Notice the
small black squares around the individual piece.
Once
this piece is selected, right-click on top of the piece and select Format
Data Point from the menu options as in the image to the
right.
- Select the
color that matches the M&M according to the key and click OK.
For example, select the Red color if the piece of the circle graph
represents the Red M&M's.
- Repeat for
each of the sectors
- Once
you've completed, click the Your Bag tab in the bottom of the screen
(see below) and calculate the Percents AND make a Circle Graphs using
only the information from your bag of M&M's.
Back to Part 1
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