Ashayer+Assignment+3

AMANI SHAYER Assignment Date: November 8, 2010 Due Date: December 6, 2010 Date of Submission: Math Block 6E Wiki Assignment 3 Making Graphs Using Technology: Data About Us

1. Make a graph of the lengths of the 25 alligators and write a sentence describing the distribution of lengths shown in the graph.

LENGTH OF ALLIGATORS
B. What are the mean and median lengths? The mean is 84.96, and the median is 85.

C. What is the range of the lengths? The range is from 61-147.

2. A. Make a graph of the weights of the 25 alligators and write a sentence explaining the distribution of weights shown in the graph. B. What are the the mean and the median weights? The mean is 108.2, and the median is 80.

C. What is the range of the weights? The range is from 28 -640.

3. A. Make a coordinate of the (length, weight) data.

B. What relationship do you notice between the length and weight of alligators that are

1. 61 and 63 inches long? I noticed that even though 63 inches is longer than 61 inches, the 61 inches long alligator seems to weigh more than the 63 inches long alligator.

2. 82, 85, and 86 inches long? I noticed that the weight is around the 80s for all of them. Except, one of the 86 inches long alligator is 90 pounds.

3. 90, 94, and 114 inches long? I noticed that the weight seemed to go way greater. Like the 114 inches long one weighs 197 pounds, the 94 inches long one weighs 110 pounds, and the 90 inches long alligators weighs 106 and 102 pounds (there is two 90 inches long alligator).

C. What weight would you predict for an alligator that are

1. 70 inches long? 50-60 pounds

2. 100 inches long? 150 pounds and above

3. 130 inches long? 310 pounds and above.

D.Based on your study of the alligator length and weight of data, do you believe it is possible to make a good estimate for the weight of an alligator if you know its length? No, because for example, the alligator might be 100 inches. The alligator could be over weight or underweight, so you wouldn't exactly know the weight if you knew the length.

1. How do the mean and the median help in describing the numbers in the data set? The mean helps me because we know the average length and weight, and the median helps me because we know how varied the lengths and the weights were.

2. How does the range help in describing the numbers in the data set? It tells me that which alligator is the smallest, and which is the biggest for length and for weight.

3. What kinds of numerical data are best displayed in: A. Line plots? Number of pets.

B. Stem-and-leaf plots? The time it takes to travel to school.

C. Coordinate graphs? Height vs. Length of Foot (of people).

4. What does it mean to say that a person's arm span is related to his or her height, or that the time it takes to travel to school is related to the distance traveled, or that the weight of an alligator is related to its length? If I know the relationship I can predict the height of the person, I could predict the distance traveled, and/or the weight of the alligator.