Minitab - Statistics 119 Mini-Tab Assignment Section 1A:...

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Unformatted text preview: Statistics 119 Mini-Tab Assignment Section 1A: March 21, 2008 1a. Histogram for pizza variable: 3.3 3.0 2.7 2.4 2.1 1.8 1.5 140 120 100 80 60 40 20 Price Frequency Mean 2.662 StDev 0.2366 N 624 Histogram of Price Normal 1b. Normal probability plot for pizza variable: 3.5 3.0 2.5 2.0 1.5 99.99 99 95 80 50 20 5 1 0.01 Price Percent Mean 2.662 StDev 0.2366 N 624 AD 2.290 P-Value <0.005 Probability Plot of Price Normal 2a. Description of the histogram: The graph is uni-modal, left skewed, and has one low outlier. Excluding the outliers, the spread is from 2.05 to 3.4, with the center being between 2.6 and 2.7. 2b. Description of the normal probability plot: Strong, Positive, Linear Relationship 3. Boxplot for the price of pizza (Y), separated by market: Denver Dallas Chicago Baltimore 3.5 3.0 2.5 2.0 1.5 Market Price Boxplot of Price 4. Description of the box plots: The Baltimore and Chicago box plots are both skewed left with several outliers, the Dallas market is skewed right with one outlier, and the Denver market is almost symmetric. The Baltimore graph has three low outliers with a median of 2.865 and an IQR of .365. The Chicago box plot has four low outliers and one high outlier, the graph has a median of 2.65 and has an IQR of .2175. The Dallas boxplot has one and one high outlier, the graph has a median of 2....
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This note was uploaded on 08/14/2008 for the course STAT 119 taught by Professor Helen during the Spring '07 term at San Diego State.

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Minitab - Statistics 119 Mini-Tab Assignment Section 1A:...

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