QA. Heavenly Chocolates manufactures and sells quality chocolate products at its plant and retail store located in Saratoga Springs, New York. Two years ago, the company developed a web site and began selling its products over the Internet. Web site sales have exceeded the company's expectations, and management is now considering strategies to increase sales even further. To learn more about the web site customers, a sample of 50 Heavenly Chocolates transactions was selected from the previous month's sales. Data showing the day of the week each transaction was made, the type of browser the customer used, the time spent on the web site, the number of web pages viewed, and the amount spent by each of the 50 customers are contained in the file HeavenlyChocolates. 1. Graphical and numerical summaries for the length of time the shopper spends on the web site, the number of pages viewed, and the mean amount spent per transaction. Please include histograms and boxplot for each variable, and add detailed statistics including Mean, Standard Deviation, Median, Mode, Variance, Minimum, Maximum, and Range. Discuss what you learn about Heavenly Chocolates' online shoppers from these numerical summaries. (for the histogram plot: Plot of "Time": lower group <=5, upper group >=30, bin width=2; Plot of "Pages Viewed": 10 bins; Plot of "Amount$": bin width=20) 2. For each day of week, and for each type of browser: Summarize the frequency and the mean amount spent per transaction. Discuss the observations you can make about Heavenly Chocolates' business based on the day of the week and the type of browser? 3. Develop a scatter chart, and compute the sample correlation coefficient to explore the relationship between the time spent on the web site vs. the dollar amount spent, as well as web pages viewed versus the amount spent. Discuss your findings. QB. Although millions of elephants once roamed across Africa, by the mid-1980s elephant populations in African nations had been devastated by poaching. Elephants are important to African ecosystems. In tropical forests, elephants create clearings in the canopy that encourage new tree growth. In savannas, elephants reduce bush cover to create an environment that is favorable to browsing and grazing animals. In addition, the seeds of many plant species depend on passing through an elephant's digestive tract before germination. 1. Use the geometric mean calculation to find the mean annual change in elephant population for each country in the 10-year period from 1979 to 1989, 18-year period from 1989 to 2007, and 5-year period from 2007 to 2012. High light those countries that have drop in the population based on the mean annual change. For each of these 3 intervals, list the largest average and smallest average changes among countries in elephant population.

2. Make a multiple boxplot graph that includes boxplots of the elephant population observations in each year (1979, 1989, 2007, 2012). Use these boxplots and the results of your analyses in part 1 above to comment on how the populations of elephants have changed during these time periods.

Customer	Day	Browser	Time (min)	Pages Viewed	Amount Spent ($)
1	Mon	Chrome	12.0	4	54.52
2	Wed	Other	19.5	6	94.90
3	Mon	Chrome	8.5	4	26.68
4	Tue	Firefox	11.4	2	44.73
5	Wed	Chrome	11.3	4	66.27
6	Sat	Firefox	10.5	6	67.80
7	Sun	Chrome	11.4	2	36.04
8	Fri	Firefox	4.3	6	55.96
9	Wed	Firefox	12.7	3	70.94
10	Tue	Chrome	24.7	7	68.73
11	Sat	Other	13.3	6	54.04
12	Sun	Firefox	14.3	5	48.05
13	Sun	Other	11.7	7	64.16
14	Mon	Firefox	24.4	10	158.51
15	Fri	Chrome	8.4	3	84.12
16	Thu	Chrome	9.6	4	59.20
17	Thu	Chrome	23.3	7	91.62
18	Mon	Chrome	14.0	7	126.40
19	Fri	Other	5.6	4	68.45
20	Wed	Chrome	15.1	5	32.69
21	Sat	Firefox	16.3	5	78.58
22	Tue	Chrome	10.2	6	74.43
23	Sun	Chrome	8.0	3	32.73
24	Tue	Firefox	8.0	2	48.66
25	Fri	Firefox	9.6	3	54.66
26	Wed	Chrome	11.0	2	40.54
27	Sat	Chrome	16.9	5	34.69
28	Sat	Firefox	6.0	4	27.91
29	Fri	Firefox	32.9	10	155.30
30	Mon	Other	11.8	9	120.25
31	Thu	Chrome	7.1	2	41.20
32	Fri	Firefox	18.0	8	134.40
33	Sun	Chrome	11.8	4	37.17
34	Fri	Chrome	9.1	3	52.09
35	Tue	Chrome	7.8	5	71.81
36	Mon	Firefox	16.5	5	59.99
37	Thu	Firefox	6.2	4	84.17
38	Sat	Chrome	11.3	4	55.58
39	Tue	Chrome	10.6	2	39.06
40	Wed	Chrome	5.0	5	36.48
41	Tue	Other	15.9	4	67.44
42	Sat	Chrome	18.1	7	60.14
43	Fri	Firefox	10.8	4	70.38
44	Mon	Chrome	13.3	7	110.65
45	Mon	Chrome	30.1	6	104.23
46	Fri	Firefox	13.7	4	68.17
47	Thu	Chrome	8.1	2	17.84
48	Fri	Chrome	9.7	5	103.15
49	Mon	Other	7.3	6	52.15
50	Fri	Chrome	13.4	3	98.75

Country	1979 Elephant Population	1989 Elephant Population	2007 Elephant Population	2012 Elephant Population
Angola	12,400	12,400	2,530	2,530
Botswana	20,000	51,000	175,487	175,454
Cameroon	16,200	21,200	15,387	14,049
Cen African Rep	63,000	19,000	3,334	2,285
Chad	15,000	3,100	6,435	3,004
Congo	10,800	70,000	22,102	49,248
Dem Rep of Congo	377,700	85,000	23,714	13,674
Gabon	13,400	76,000	70,637	77,252
Kenya	65,000	19,000	31,636	36,260
Mozambique	54,800	18,600	26,088	26,513
Somalia	24,300	6,000	70	70
Tanzania	316,300	80,000	167,003	117,456
Zambia	150,000	41,000	29,231	21,589
Zimbabwe	30,000	43,000	99,107	100,291