lbox Message Format Window Help Question Completion Status QUESTION 1 2 points R
ID: 3043981 • Letter: L
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lbox Message Format Window Help Question Completion Status QUESTION 1 2 points Raw data is mostly disorganize and difficult to analyze. True False QUESTION 2 2 points The sample average of seven (7) diameters (mm) of the inside diameter of nuts are 7,5, 10, 4, 5,8, and 5 is 6.29 mm, the mode is 5 mm, and the median is 5 mm. Faise QUESTION 3 2 points The pH of a solution is measure eight times by one operator using the same instrument. The measurements are: 7.13, 7.10, 7.15, 7.14, 7.16, 7.12, 7.13, and 7.13. The first and third quartiles are 7.123 and 7.148 O True O False Click Saue and Submit to save and submit. Cliek Save AlR Ansuers to sape all onswers Save All Answers MacBook Pro 3 5 6 8 9Explanation / Answer
1. True.
Raw data is data in no particular form or order. With statistical tools, we can organize it and give it meaning. Till then, it is difficult to analyze.
2. True.
The diameters in sorted order is: 4, 5, 5, 5, 7, 8, 10 mm. Mean = 44/7 = 6.29 mm. Median = 5 mm. Mode = 5 mm (appearing 3 times).
3. False.
The pH in sorted order are: 7.10, 7.12, 7.13, 7.13, 7.13, 7.14, 7.15, 7.16. First quartile Q1 = (7.12+7.13)/2 = 7.125, not 7.123. Third quartile Q3 = (7.14+7.15)/2 = 7.145, not 7.148.
4. False.
The pH in sorted order are: 7.10, 7.12, 7.13, 7.13, 7.13, 7.14, 7.15, 7.16. Range = Maximum - Minimum = 7.16 - 7.10 = 0.06, not 0.
5. True.
The histogram is almost evenly balanced on both sides of 150-170 bar in the graph. The bars on the right are slightly higher than those on the left, so the mean is closer to 170 than to 150. Still, because of the balance and the peak in the middle, we can say that the mean is in 150-170 range.
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