Directions: You probably see them in the news all the time—predictions about
prices, jobs, stocks, and other aspects of the economy. Now it’s your turn to predict
the future! Follow the directions to make and explain an economic prediction for an
article you have been asked to write in the Economic News.
1. Choose one item of interest to you in the Historical Pricing Chart on the next
page.
2. Calculate the percent of change of the item’s price each decade, and use
your results to determine the average rate of change from 1960–2000.
3. Comment on the trend in your item’s percent of increases.
4. Go shopping! Find the average current price of your item online, in the
newspaper, or locally by looking at the price when you go to the store in the
next day or two. Does the current price match the trend from 1960–2000
that you identified? Explain your thinking.
5. Create a line graph or other visual model to show the pricing trend. Be sure
to include the current price in your model.
6. Predict the item’s price at a future date. Use your calculations and visual
model to justify your prediction.
7. Organize your analysis, prediction, explanations, and visual model in a brief
news article. Your completed article will be submitted as your portfolio
assessment
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portfolio_pg1_u6_percent_predictions_portfolio___modified.docx

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Percent Predictions Portfolio Template: MY EXAMPLE FOR YOU TO FOLLOW
Applications of Percent
1. Choose one item of interest to you from the Historical Pricing Chart on the Portfolio Worksheet found
in your lesson. (1 point)
YOU CANNOT USE THE MOVIE TICKET AS I AM DOING IT AS AN EXAMPLE FOR YOU. I HAVE ALSO DONE AN
EXAMPLE TO THE GRAPH. Blank sheet for you to fill out is also attached.
Item
Movie
Ticket
1960 Price
.69
1970 Price
1.55
1980 Price
2.60
1990 Price
4.23
2000 Price
5.39
2. Calculate the percent of change of the item’s price each decade, and use your results to determine the
average rate of change from 1960-2000. Please show your work. (8 points)
Decade
Work and
Answers →
% of Change
1960-1970
.69-1.55
.69
=1.246
=125%
% of Change
1970-1980
1.55-2.60
1.55
=.677
=68%
% of Change
1980-1990
2.60-4.23
2.60
=1.63
=163%
% of Change
1990-2000
4.23-5.39
4.23
=.274
=27%
Average % of
Change
125+68+163+27
4
=383/4= 95.75
=96%
3. Give your comments on the trend in your item’s percent of increases. Is the percent of increase
constant? If yes, why? If no, why not? (2 points)
4. What is the average current price of your item? Please cite your source. (1 point)
5. Create a line graph or bar graph to show the pricing trend. Be sure to include the current price in your
model. (2 points) See Below. You can do this graph by hand- take a picture of it or scan it- so you can
put it in the drop box.
P
R
I
C
E
Movie Prices from 1960 to 2010
6
5
O
F
A
M
O
V
I
E
4
3
Series1
2
1
0
19601
19702
3
1980
19904
20005
6. Predict the item’s price at a future date. Use the date 2030. Please show your work. Use math
calculations to justify your prediction. (2 points)
Percent Predictions Portfolio Template: MY EXAMPLE FOR YOU TO FOLLOW
Applications of Percent
1. Choose one item of interest to you from the Historical Pricing Chart on the Portfolio Worksheet found in
your lesson. (1 point)
YOU CANNOT USE THE MOVIE TICKET AS I AM DOING IT AS AN EXAMPLE FOR YOU. I HAVE ALSO DONE AN
EXAMPLE TO THE GRAPH. Blank sheet for you to fill out is also attached.
Item
1960 Price
1970 Price
1980 Price
1990 Price
2000 Price
2. Calculate the percent of change of the item’s price each decade, and use your results to determine the
average rate of change from 1960-2000. Please show your work. (8 points)
Decade
% of Change
1960-1970
% of Change
1970-1980
% of Change
1980-1990
% of Change
1990-2000
Average % of
Change
Work and
Answers →
3. Give your comments on the trend in your item’s percent of increases. Is the percent of increase
constant? If yes, why? If no, why not? (2 points)
4. What is the average current price of your item? Please cite your source. (1 point)
5. Create a line graph or bar graph to show the pricing trend. Be sure to include the current price in your
model. See Below. (2 points) You can do this graph by hand- take a picture of it or scan it- so you can
put it in the drop box.
6. Predict the item’s price at a future date. Use the date 2030. Please show your wor. Use math
calculations to justify your prediction. (2 points)

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