Nt1310 Quiz 1

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1.2 Below we list several variables. Which of these variables are quantitative and which are qualitative? Explain. a. The dollar amount on an accounts receivable invoice. Quantitative- Has a numeric value that can be counted b. The net profit for a company in 2009. Quantitative Value, profits is a numeric value that can be ordered. c. The stock exchange on which a company’s stock is traded. Qualitative Value, is just the description of where the stock was being exchanged d. The national debt of the United States in 2009. Quantitative Value, is number that can be counted and incurred e. The advertising medium (radio, television, or print) used to promote a product. Qualitative Value, has no numeric value 1.17 Classify each of…show more content…
Door choice on Let’s Make A Deal Door #1 Door #2 Nominative, the doors has not ranking or orders there is just two option door 1 or 2 Television show classifications TV-G TV-PG TV-14 TV-MA Nominative, each classification main purpose is to inform the viewer the context of the television show. There is no real order in my opinion. Personal computer ownership Yes No Nominative, No order or ranking Restaurant rating ***** **** *** ** * Ordinal each filling has a ranking of the quality of the restaurant Income tax filing status Married filing jointly Married filing separately Single Head of household Qualifying widow(er) Nominative, each qualitative category just explain a category to which you may qualify to file in. There is no real order or ranking. 3.3 Calculate the mean, median, and mode of each of the following populations of numbers: a.9, 8, 10, 10, 12, 6, 11, 10, 12, 8 Mean: 96/10= 9.6 Median: (10+10)/2 = 10 Mode:…show more content…
Calculate sample mean and s for the expense data. In addition, show that the two different formulas for calculating s2 give the same result. Sample Mean=( 157+132+109+145+125+139)/6=134.5 S2=[(157-134.5)2+(132-134.5)2+(109-134.5)2+(145-134.5)2+(125-134.5)2+(139-134.5)2]/(6-1)= 267.7 B. Assuming that the distribution of entertainment expenses is approximately normally distributed, calculate estimates of tolerance intervals containing 68.26 percent, 95.44 percent, and 99.73 percent of all entertainment expenses by the sales force. Tolerance level 68.26%=118.14 - 150.86 (134.5 +/- 16.36) Tolerance level 95.44%=101.78 – 167.22 (134.5 +/- 32.72) Tolerance level 99.73%=85.42 – 183.58 (134.5 +/- 49.08) C. If a member of the sales force submits an entertainment expense (dinner cost for four) of $190, should this expense be considered unusually high (and possibly worthy of investigation by the company)? Explain your answer. I would have to say that it is considered high because it surpasses three standard deviation over the sample mean. This means that this number is highly skewed to the right. D. Compute and interpret the z-score for each of the six entertainment

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