birds’ eggs - jschoettle.com · 2. what does the graph show about the connection between the...

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Copyright © 2011 by Mathematics Assessment Page 1 Birds’ Eggs Resource Service. All rights reserved. A B C D E Birds’ Eggs This scatter diagram shows the lengths and the widths of the eggs of some American birds. 1. A biologist measured a sample of one hundred Mallard duck eggs and found they had an average length of 57.8 millimeters and average width 41.6 millimeters. Use a X to mark a point that represents this on the scatter diagram.

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Page 1: Birds’ Eggs - jschoettle.com · 2. What does the graph show about the connection between the lengths of birds’ eggs and their widths? _____ _____ _____ 3. Another sample of similar

Copyright © 2011 by Mathematics Assessment Page 1 Birds’ EggsResource Service. All rights reserved.

A

BC D

E

Birds’ Eggs

This scatter diagram shows the lengths and the widths of the eggs of some American birds.

1. A biologist measured a sample of one hundred Mallard duck eggs and found they had an averagelength of 57.8 millimeters and average width 41.6 millimeters.

Use a X to mark a point that represents this on the scatter diagram.

Page 2: Birds’ Eggs - jschoettle.com · 2. What does the graph show about the connection between the lengths of birds’ eggs and their widths? _____ _____ _____ 3. Another sample of similar

Copyright © 2011 by Mathematics Assessment Page 2 Birds’ EggsResource Service. All rights reserved.

2. What does the graph show about the connection between the lengths of birds’ eggs and their widths?

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3. Another sample of similar birds has eggs with a length of 35 millimeters on average. If these birds follow the trend in the scatterplot, about what width would you expect these eggs to be, on average?

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4. Describe the differences in shape of the two eggs C and D.

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5. Which of the eggs A, B, C, D, and E has the greatest ratio of length to width? Explain how you decided.

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