# Week2Lab - Rule I think the percentage of data that lies...

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Math 221 Week 2 Lab Submitted by: Isaac Delgado Part 1. Random Sampling It is important for the auditor because he/she does not want to single any file out just because it has a certain topic. Also because this is a random sample audit there is no need to audit every file. Ordered Sample 3 AC 10 AJ 14 AN 15 AO 25 AY 29 BC 35 BI 36 BJ 39 BM 41 BO 48 BV 52 BZ 55 CC 56 CD 61 CI 63 CK 67 CO 68 CP 71 CS 73 CU

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Part 2. Cereal and Fiber Type Part 3. Milk Production 1. Find the sample mean. 2270.54 2. Find the sample standard deviation. 653.1822 3. Make a frequency distribution for the data. Milk Production Class Limits Frequency Midpoi nt 1147 1646 7 1396.5 1647 2146 15 1896.5 2147 2646 13 2396.5 2647 3146 11 2896.5 3147 3646 3 3396.5 4. Create a histogram for the data. Does the data appear bell-shaped? Yes 5. What true percent of the data lies within one standard deviations of the mean? Within two standard deviations of the mean? How do these results agree with the Empirical

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Unformatted text preview: Rule? I think the percentage of data that lies within one standard deviation of the mean is around 45 to 50%. This agrees with the empirical rule by using the bell shaped distribution. 6. Find the median of the milk production. 2207 7. Find the maximum and the minimum value. Maximum = 2923 Minimum = 1147 8. What is the range? 1776 9. What is the first Quartile? 1798.25 10. What is the second Quartile? (What is this also called?) 2207 11. What is the third Quartile? 2727.5 12. What is the 80th percentile? 2832.4 Part 4. Linear Regression Sugar and Calories Analysis Yes, this does have a linear relationship. Sugar and Cost Analysis Yes, this does have a linear relationship. Weight and Cost Analysis Yes, this does have a linear relationship....
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Week2Lab - Rule I think the percentage of data that lies...

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