Bali+Wiki+Assignment+3

Baber Ali Date of submission= December 4, 2010 Date Assigned= November 8, 2010 Block= G Wiki Assignment Number= 3 Page Number= Data About Us 69 and 70 Problem Number= 123

Question 1

A. Create a graph of the 25 alligators lengths and then write a sentence telling the distribution of lengths shown in the graph. (inches) ||
 * Gator Number || Length
 * 1 || 74 ||
 * 2 || 94 ||
 * 3 || 85 ||
 * 4 || 61 ||
 * 5 || 128 ||
 * 6 || 72 ||
 * 7 || 89 ||
 * 8 || 90 ||
 * 9 || 63 ||
 * 10 || 82 ||
 * 11 || 114 ||
 * 12 || 69 ||
 * 13 || 86 ||
 * 14 || 88 ||
 * 15 || 58 ||
 * 16 || 90 ||
 * 17 || 94 ||
 * 18 || 68 ||
 * 19 || 78 ||
 * 20 || 86 ||
 * 21 || 72 ||
 * 22 || 74 ||
 * 23 || 147 ||
 * 24 || 76 ||
 * 25 || 86 ||

There is a cluster from 61 to 94 inches and most of them were between 82 to 89. B. What is the median and mean lengths? The median length is 85 inches and the mean length is 84.96 inches.

C. Tell the range of the lengths? The range was from 58 to 147.

Question 2 A.Create a graph showing the weights of the 25 alligators and then write a sentence telling the distribution of weights. (pounds) ||
 * Gator Number || Weight
 * 1 || 54 ||
 * 2 || 110 ||
 * 3 || 84 ||
 * 4 || 44 ||
 * 5 || 366 ||
 * 6 || 61 ||
 * 7 || 84 ||
 * 8 || 106 ||
 * 9 || 33 ||
 * 10 || 80 ||
 * 11 || 197 ||
 * 12 || 36 ||
 * 13 || 83 ||
 * 14 || 70 ||
 * 15 || 28 ||
 * 16 || 102 ||
 * 17 || 130 ||
 * 18 || 39 ||
 * 19 || 57 ||
 * 20 || 80 ||
 * 21 || 38 ||
 * 22 || 51 ||
 * 23 || 640 ||
 * 24 || 42 ||
 * 25 || 90 ||

There is a cluster between 28 and 110 pounds. The biggest outlier is 640 pounds. You must be wondering why there are so many screenshots that is why because 1 screen shot wasn't enough to take the whole stem and leaf plot so I took screenshots as I scrolled down.

B.Tell the mean and median weights? The mean weight is 108.2 pounds and the median weight is 80 pounds.

C. Tell me the range of the weights? The range of the weights is 28 to 640 pounds.

Question 3 A. Make a coordinate graph of the length and the width.

.

B. What do you notice between length and weight of alligators that are bi. 61 and 63 inches long? bii. 82,85 and 86 inches long? These alligators length is larger then their weight. These alligators length is more then their weight but their weight is really close to the length. biii. 90,94 and 114 inches long? These alligators weight is more then their length.

C. What would you estimate for an alligators weight that is ci. 70 inches long? cii. 100 inches long? ciii. 130 inches long? 50 pounds 115 pounds 368 pounds

D. Do you think that you can make a good estimate of an alligators weight by knowing it's length? No, because some people think that the alligators weight number is bigger then the alligators length number and that is not true because some alligators like Gator number 6 has more length and less weight then it's length.

Explaining Your Reasoning 1. How does the mean and the median helps in describing the numbers in a data set? The median tells us 1 of the numbers from the data set which is in the middle. The mean tells us the average number the data set.

2. How does the range helps in describing the numbers in a data set? The range tells the first and last number of the data set.

3. What kinds of numerical data can be best displayed with a. line plots? b. stem and leaf plots? Line plot is best for the data in which you want to find the clusters the bells and all that. If you want to put a lot of information then stem and leaf plots are the best. c. coordinate graph If you have 2 things that you want to compare then coordinate graph is the best.

4. What does it means to say that a person's arm span is related to his or her height, or that the weight of an alligator is related to it's length, or that the time it takes to travel to school is related to the distance traveled? It means that you can figure out the arm span by the height, or the weight of an alligator by it's length, or you can figure out the time it takes to travel by the distance.