Affiliate Marketing Secrets

Statistics Need help please?
1. Three professors at Northern Kentucky University compared two different approaches to teaching courses in the school of business (M. W. Ford, D. W. Kent, and S. Devoto, “Learning from the Pros: Influence of Web-Based Expert Commentary on Vicarious Learning about Financial Markets,” Decision Sciences Journal of Innovative Education, January 2007, 5(1), 43–63). At the time of the study, there were 2,100 students in the business school and 96 students were involved in the study. Demographic data collected on these 96 students included class (freshman, sophomore, junior, senior), age, gender, and major.
a. Describe the population of interest.
b. Describe the sample that was collected.
c. For each of the four demographic variables mentioned above, indicate if they are categorical or numerical.”
4. A sample of 50 undergraduate students answered the following survey.
1. What is your gender? Female _____ Male _____
2. What is your age (as of last birthday)? _____
3. What is your height (in inches)? _____
4. What is your current registered class designation?
Freshman _____ Sophomore _____ Junior _____ Senior _____
5. What is your major area of study?
Accounting _____ Economics/Finance _____ Information Systems _____ International Business _____ Management _____ Marketing/Retailing _____ Other _____ Undecided _____
6. At the present time, do you plan to attend graduate school? Yes _____ No _____ Not sure _____
7. What is your current cumulative grade point average? _____
8. What would you expect your starting annual salary (in $000) to be if you were to seek employment immediately after obtaining your bachelor’s degree? _____
9. What do you anticipate your salary to be (in $000) after five years of full-time work experience? _____
10. What is your current employment status? Full-time _____ Part-time _____ Unemployed _____
11. How many clubs, groups, organizations, or teams are you currently affiliated with on campus?
12. How satisfied are you with the student advisement services on campus? _____
Extremely Satisfied 1 2 3 4 5 6 7 Extremely Unsatisfied
13. About how much money did you spend this semester for textbooks and supplies? _____”
Using the Data located on the next tab, please answer the following questions:
a. Which variables in the survey are categorical?
b. Which variables in the survey are numerical?
c. Which variables are discrete numerical variables?
ID Num Gender Age Height Class Major Grad School GPA Expected Salary Annual Salary in 5 Years Employment Status Number of Affiliations Satisfaction Advisement Spending
ID01 m 19 69 so mr y 3.19 40 70 un 0 2…
ID02 m 21 67 sr m un 3.11 50 60 pt 0 2…
ID03 m 20 68 jr ef n 3.02 50 60 pt 0 5…
ID04 m 18 79 fr ef y 4.00 50 57 pt 0 5…
ID05 m 19 67 so m y 2.75 40 100 pt 1 1…
ID06 m 21 70 jr a y 3.24 60 100 pt 2 5…
ID07 m 20 68 jr ef y 2.93 50 75 un 0 4…
ID08 m 21 71 jr m y 3.26 40 60 pt 0 1 …
ID09 f 20 62 so mr n 3.21 45 65 pt 0 4…
ID10 m 19 70 so a y 3.23 50 70 pt 0 6 …
ID11 m 36 67 so a un 3.77 60 120 pt 1 …
ID12 f 19 65 so a un 3.71 40 60 un 0 5…
ID13 f 20 65 jr a un 3.20 45 65 pt 3 5…
ID14 f 21 65 jr mr y 2.94 40 60 pt 0 4…
ID15 f 19 66 so mr y 3.22 40 80 pt 0 3…
ID16 m 20 69 jr un un 3.34 60 90 pt 0 …
ID17 f 19 64 fr ib un 3.09 40 65 un 1 …
ID18 m 20 67 jr mr n 3.72 50 80 pt 2 4…
ID19 m 23 70 jr ef un 2.50 50 75 un 0 …
ID20 m 20 70 so ef y 2.74 60 75 un 0 4…
ID21 f 20 63 so mr y 3.55 60 100 pt 2 …
ID22 f 19 67 so m un 3.00 45 65 pt 0 3…
ID23 f 19 65 so mr y 3.62 40 90 pt 0 3…
ID24 f 20 63 jr m un 2.60 40 60 pt 1 3…
ID25 f 22 63 sr ef y 3.63 50 150 pt 3 …
ID26 f 21 65 sr o n 2.38 40 60 pt 2 4 …
ID27 m 21 73 jr m y 2.45 40 65 pt 0 2 …
ID28 m 30 71 jr m n 3.28 50 75 pt 0 5 …
ID29 f 20 66 so ib un 3.18 50 75 un 1 …
ID30 m 24 62 so a n 3.33 55 85 pt 0 4 …
ID31 f 19 69 so mr un 2.87 30 50 pt 0 …
ID32 f 33 67 sr a n 3.14 45 75 ft 0 5 …
ID33 f 19 64 fr ib n 3.44 45 90 pt 1 6…
ID34 m 20 72 so m y 3.85 60 100 pt 1 1…
ID35 f 22 61 jr o y 3.50 45 60 un 0 7 …
ID36 m 21 69 so ef n 2.92 55 85 pt 0 5…
ID37 f 19 60 fr a un 2.80 55 80 pt 0 3…
ID38 f 21 66 jr mr un 2.67 40 65 pt 0 …
ID39 m 20 69 so a un 2.65 45 80 un 0 3…
ID40 f 20 63 so is n 2.88 50 80 un 1 4…
ID41 f 19 65 so ef un 3.43 50 100 pt 0…
ID42 f 21 63 jr ef y 3.48 60 110 pt 0 …
ID43 m 20 68 so a un 2.91 45 90 pt 1 4…
ID44 m 19 72 so a n 2.75 50 80 pt 0 5 …
ID45 m 22 69 jr is y 3.62 55 85 un 2 4…
ID46 m 21 68 jr m n 2.42 35 60 pt 1 3 …
ID47 f 22 66 jr mr n 2.76 40 65 pt 0 3…
ID48 m 19 69 fr un un 3.10 45 70 pt 0 …
ID49 m 20 68 so is n 2.61 40 65 pt 1 3…
ID50 f 20 66 so is n 3.13 45 80 pt 0 2…

I am a full time employee. As a hobby I’ve started creating web pages on free platforms (free hosting and free sub-domain); those pages also include affiliate links from Amazon or eBay. Let’s say I will, at some point, make £20 per year. Do I have to declare myself self employed, start filling in self assessment forms and pay tax to Inland Revenue for £20 of additional earnings (on top of my annual salary)?
If not, being a negligible amount, then what is the threshold (if any) above which you have to declare yourself self-employed and start paying taxes? If there is no exact threshold, does this mean that the Inland Revenue is expecting getting taxes from (let’s say) a person that makes online a £1 profit (paid into his bank account) from selling one item on eBay?
Thank you.