# Linear Regression

miled | 20:00 Sat 25th May 2019 | Jobs & Education
plz someone find this answer for me, I don't really know where to start
A regression in statistics is statistical analysis that assess the relationship between two variables. The calculation is used to determine the relationship between two variables.
You are given the task to determine the relationship between student’s study hour and their grades achieved.
(a) Sketch a scatter plot for a data.

(b) Find the equation of the least squares line that will enable us to predict a student’s grade based on his or her study hour. Interpret the result.

(c) Calculate the coefficient of determination and coefficient of correlation.

1 to 3 of 3

An example here- one I picked at random so I don't know how good it is See this too. https://www.emathzone.com/tutorials/basic-statistics/example-method-of-least-squares.html Excel does it all for you though
10:08 Sun 26th May 2019
Been a while since I was in school, but I think you might start by drawing the graph axis and marking on the data points given.

You then look up in your notes how to calculate the least squares line. Use it to prefict the student's grade.

Then look up in your notes how to calculate the coefficients.
This will be in any Statistics text book used by your examining board/course provider
Draw /plot an xy scatter graph- we can't do that without the data.
Look up the least squares formula- easily found on ikipedia or any maths site o- or use Excel which does it for you
Calculate the things you need- use the right formulae- or let Excel do it for you.
You need to put some effort into coursework

An example here- one I picked at random so I don't know how good it is
See this too. https://www.emathzone.com/tutorials/basic-statistics/example-method-of-least-squares.html
Excel does it all for you though

1 to 3 of 3