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Tables, Charts, and Graphs.

To make a data table:

1. Draw a data table as shown below.

2. Give your table a title that identifies your variables ("My Week's Intake of Nutrients").

3. Label the column on the left as the independent variable (Nutrient). Underneath, list each type of nutrient you used for the independent variable (Calcium, Fat, Sodium, Iron).

4. Label the columns to the right as the dependent variable (Total %Daily Value). Draw boxes under these columns in which you can record the results of each trial for each activity (Monday, Tuesday, etc.).

5. Include a column at the far right to record the average %DV for each nutrient. To calculate the average %DV, add the %DV for each nutrient, then divide the total %DV by the number of days.
My Week's Intake of Nutrients

Nutrient Total %Daily Value

 Monday Tuesday Wednesday Thursday Friday Saturday

Calcium 40 50 120 70 150 70
Fat 70 170 200 90 140 160
Sodium 60 90 110 60 160 80
Iron 30 40 50 30 40 60

Nutrient Total %Daily Value

 Sunday Average

Calcium 60 80
Fat 80 130
Sodium 70 90
Iron 30 40


To make a line graph:

1. On graph paper, draw a set of axes (x and y).

2. Give your line graph a title ("My Calcium Intake Over Time").

3. Label the x-axis with your independent variable (Days of the Week) with the values of the independent variable (Monday, Tuesday, etc.).

4. Label the vertical y-axis with your dependent variable (Total %Daily Value). Place a scale that includes all the values of your dependent variable along the y-axis.

5. Plot a point on the graph for each piece of data. Example:The total %DV of calcium on Monday is 40%. To locate this point in your graph, draw an imaginary vertical line from the Monday mark on the x-axis. Then, draw an imaginary horizontal line from the 40% mark on the y-axis. Plot the point where the lines intersect. When you've plotted the points for all your data, connect the points.

[GRAPH OMITTED]

To make a bar graph:

1. On graph paper, draw a set of axes (x and y).

2. Give your bar graph a title ("My Average Intake of Nutrients").

3. Label the horizontal (x) axis with your independent variable (Type of Nutrient), including the nutrients you used for the independent variable (Calcium, Fat, Sodium, Iron).

4. Label the vertical (y) axis with your dependent variable (Average %Daily Value) and a scale that marks the values of the dependent variable.

5. For each independent variable, draw a solid bar to the height of the corresponding value of the dependent variable. Example: The average %DV of calcium consumed is 80%. Draw a bar above the "calcium" label on the x-axis to the 80%DV mark on the y-axis.

[GRAPH OMITTED]

To make a pie chart:

1. Draw a circle with a compass.

2. Give your pie chart a title ("Class Rating In Calcium Intake").

3. Mark the center with a point; this is where each pie "slice," or wedge, will start.

4. Measure a wedge for each level of the independent variable (High, Average, Low, or Really Low). First, convert your data from percentages to angle degrees. Example: If 40% of classmates get a high mark for calcium intake, the pie wedge for "high" would be 40% of the 360 [degrees] circle, or 144 [degrees] (360 x .4 = 144). Position a protractor at the center point of the circle. Mark 0 [degrees] and 140 [degrees] angles with points on the edge of the circle. Draw a line from these points to the center of the circle.

5. Label the wedge (include its percentage).

6. Measure your next wedge from the edge of the first. When finished, the entire circle should be filled, and the angles of the wedges should add up to 360 [degrees].
Class Rating in
Calcium Intake

HIGH 40%
AVERAGE 20%
LOW 10%
REALLY
LOW 30%

Note: Table made from pie chart.
COPYRIGHT 2001 Scholastic, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2001, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:science
Publication:Science World
Article Type:Brief Article
Date:Sep 17, 2001
Words:664
Previous Article:Eat and Report.
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