# Spearman’s rank correlation coefficient

THIS IS AIMED AT ENABLING A STUDENT TO CALCULATE THE SPEARMAN’S RANK CORRELATION COEFFICIENT FROM GIVEN DATA AND TO RELATE IT TO BUSINESS AS AN AREA OF APPLICATION.

CASE 1: RANKING NON-REPEATING DATA

CASE 2: RANKING REPEATING DATA

CASE 3: LINK BETWEEN SPEARMAN RANK AND BUSINESS PROFITS

1.      (a) What do you understand by the word correlation?

(b)Explain with examples the types of correlation.

(c) State and explain the formula used to calculate spearman’s rank correlation coefficient.

(d)(i)Calculate the square of deviation between the given variables in the table below.

P

Q

12

11

32

24

14

65

25

23

16

27

09

18

(ii)  Write the rank of X and of Y of the given table

X

Y

29

24

34

44

29

24

11

24

13

35

(e) Copy and fill the comments column of the tables below that have the range of spearman’s rank correlation coefficient values.

(i)

RANK

COMMENT

0 – 0.19

0.2 – 0.39

0.4 – 0.59

0.6 – 0.79

0.8 – 0.999

(ii)

RANK

COMMENT

-0 to -0.19

-0.2 to -0.39

-0.4 to -0.59

-0.6 to -0.79

-0.8 to -0.999

(f) Below is a table showing the quantity of two commodities sold within eight days.

Use it to answer the questions that follow.

Week

1

2

3

4

5

6

7

8

Commodity1

200

150

180

60

190

210

160

75

Commodity2

300

80

110

200

70

48

90

120

Profits(\$)

9000

3850

4350

4900

4250

4110

4200

3525

By calculating the spearman’s rank correlation coefficient, find and explain the relationship between.

(i)                 Commodity 1 and commodity 2

(ii)               Commodity 1 and profits

(iii)             Commodity 2 and profits

(g) Using the table in (f) above, calculate the profit made from selling a single commodity of each.

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Lets Write For You
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend
OUR GIFT TO YOU
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat