Topic 2 - Topic 2 Discussion Statistics Professor Powell Part 1 Im actually really thankful that this was part of the assignment because honestly I

# Topic 2 - Topic 2 Discussion Statistics Professor...

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Topic 2 Discussion Statistics Professor Powell Part 1 I’m actually really thankful that this was part of the assignment because honestly I would not have looked into these resources otherwise. The multimedia library hosts a selection of different ways to read and interpret the data and information from specific chapters and sections. The options include the multimedia textbook, videos, videos from EACH section, Java applets, PowerPoints, and StatCrunch, which is kind of like excel. Part 2 Data: 24, 26, 27, 27, 28, 31, 34, 35, 36, 39, 40, 43, 43, 45, 51 Number of classes: 5 Class width: (max-min)/class #= (51-24)/5= 5.6=> 6 Classes Frequency Relative Frequency 24-29 5 1/3 or .33 or about 33% 30-35 3 1/5 or .2 or 20% 36-41 3 1/5 or .2 or 20% 42-47 3 1/5 or .2 or 20% 48-53 1 1/15 or .066% or about 7% There are no outliers because all the numbers in the data set are close together. [24-29] [30-35] [36-41] [42-47] [48-53]
30 th percentile: 28. This means that 30% of all the data has a value of 28 or less. 5 number summery: 24, 27.5, 35, 41.5, 51 Part 3 2 4 6 7 7 8 3 1 4 5 6 9 4 0 3 3 5 5 1 This data has a positive skew to the right Part 4 Scenario: Desserts sold in a bakery over 10 days Data: (1,27) (2,34) (3,15) (4,40) (5,25) (6,19) (7,47) (8,36) (9,21) (10,34) 2 4 6 8 10 12 5 10 15 20 25 30 35 40 45 50 Desserts Sold in a Bakery Over 10 Days Day Desserts Sold Line of regression: 0.558x+26.733 In this case the y intercept is unreasonable because “0” does not count as a day and therefore the number of desserts sold on day 0 is not interpretable. The slope of the line is very small which depicts that there is a very slight positive ascension as more days go by. r= 0.1672 R^2= 0.028 Line of regression 0.558x+26.733
Although the correlation is positive, it is weak because the value is very close to 0. In our situation this can mean that as more time goes by the bakery is gaining more popularity but barely. Over a larger time span and larger correlation can develop.