Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

How to find the correlation coefficient.

Bicycle helmet use. Table lists data from a cross-sectional survey of bicycle safety. The explanatory variable is a measure of neighbourhood socioeconomic status (variable_RFM). The response variable is percent of bicycle riders wearing a helmet (P_Helm).

Percent of school children getting free or reduced-fee lunches at school (variable P_RFM) and percent of bicycle riders wearing a helmet (variable P_HELM). Data for this research was recorded by field observers in October of 1994.

I (i)     

School               

P_RFM         

 P-HELM  

 

 

 

 

1

Fair Oaks            

50

22.1

2

Strandwood          

11

35.9

3

Walnut Acres

2

57.9

4

Disc Bay             

19

22.2

5

Belshaw

26

42.4

6

Kennedy              

73

5.8

7

Cassell

81

3.6

8

Miner

51

21.4

9

Sedgewick

11

55.2

10

Sakamoto             

2

33.3

11

Toyon                 

19

32.4

12

Lietz

25

38.4

13

Los Arboles           

84

46.6

Compute r for all 13 data points. Define the correlation strength.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923294

Have any Question? 


Related Questions in Statistics and Probability

What are the most common measurements of system performance

What are the most common measurements of system performance in queuing analysis?

It is known that 15 of us home mortgages are under water ie

It is known that 15% of US home mortgages are under water (i.e. the homeowner owes more than the house is worth). Suppose 18 mortgages are randomly selected (assume independence). Let the random variable X equal the numb ...

The heart of darkness is one of the great literary

The Heart of Darkness is one of the great literary criticisms of Imperialism in Africa. Marlow, the main character, is originally fascinated by the possibilities that exploring Africa has to offer a young man seeking his ...

The distribution of piston diameters is normally

The distribution of piston diameters is normally distributed. It is known that 10% of all pistons have diameters exceeding 20 inches and 5% have diameters smaller than 10 inches. What are the mean and SD of the distribut ...

A box of 30 diodes is known to contain five defective ones

A box of 30 diodes is known to contain five defective ones. If two diodes are selected at random without replacement, what is the probability that at least one of these diodes is defective?

Question 1 -visit the australian stock exchange website

Question 1 - Visit the Australian Stock Exchange website, www.asx.com.au and from "Prices and research" dropdown menu, select "Company information". Type in the ASX code "WPL" (Woodside Petroleum Limited), and find out d ...

You have 10000 and want to invest 4000 in stock a and 6000

You have $10,000 and want to invest $4,000 in Stock A, and $6,000 in Stock B.   Rate of Return A B Probability 0.5 14% 8% 0.5 10% 18% 1. What is expected rate of return for A? 2. What is the variance of A? 3. What is the ...

Two balls are selected sequentially without replacement

Two balls are selected sequentially (without replacement) from an urn containing three red, four white, and five blue balls. (a) What is the probability that the first is red and the second blue? (b) What is the probabil ...

Suppose a point in two-dimensional cartesian space is

Suppose a point in two-dimensional Cartesian space, , is equally likely to fall anywhere on the semicircle defined by X 2 + Y 2 = 1 and Y>=0. Find the PDF of Y, f Y (y).

Nbspan experiment consists of rolling a pair of six-sided

An experiment consists of rolling a pair of (six-sided) dice and observing the sum. This experiment is repeated until the sum of 7 is observed at which point the experiment stops. Let be the random variable which represe ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate