Predective Assignment-3

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University Of Connecticut *

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Statistics

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Feb 20, 2024

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. Assignment-3 Part 1: Breakfast Cereals. Use the data for the breakfast cereals example in Section 4.8 (Cereals.jmp) to explore and summarize the data as follows: a. Which variables are continuous/numerical? Which are ordinal? Which are nominal? A) Type: It is a Nominal data as it represents unordered categories (A, B, C) Continuous/ Numerical data: Alcohol, Malic_Acid, Ash, Ash_Alcalinity, Magnesium, Total_Phenols, Flavanoids, Nonflavanoid_Phenols, Proanthocyanins, Color_Intensity, Hue, OD280_OD315, Proline.  There were no ordinal data which ordered categories with inherent rankings. b. Calculate the following summary statistics: mean, median, min, max, and standard deviation for each of the continuous variables, and the count for each categorical variable. This can be done using Cols > Columns Viewer. i. Is there any evidence of extreme values? ii. Which, if any, of the variables is missing values? A)

i)There are no direct evidence of extreme values as all the minimum and maximum values for all of variables look reasonable. ii) Which, if any, of the variables is missing values? A)

 There are not any variables missing values in the data. c) U se Analyze > Distribution to plot a histogram for each of the continuous variables and create summary statistics. Based on the histograms and summary statistics, answer the following questions: ii) Which variables seem skewed? A)Malic_Acid, Ash_Alcanalinity, Magnesium, Nonflavanoid_Phenols, Proanthocyanins, Color_Intensity, Proline, OD280_OD315. iii)Are there any values that seem extreme? A)There are some values seem extreme beyond box plots value in some of the variables  Malic Acid: 5.51, 5.65, 5.8  Ash: 3.22, 3.23, 1.36  Ash_Alclinity: 30.28,10.6  Magnesium: 162, 151, 139  Proanthocyanins: 3.58, 3.28  Color_Intensity: 13, 11.75, 10.8

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