Bus 701 statistical modeling assignment course description and task instructions

Instructions for stage 3 all sections

Overview: Each student will be given a sample from a large population and each student will analyse their own sample. The data and a short description of the data is given in a separate excel file

https://app.box.com/s/zlzjujmo3cq1jst35jummv8118pc0h0e

Students have to answer Many sections (sections 0, 1,2,3,4,5,6,7,8) all answers must go into a single word file.

Section 0:  Cover sheet 

You do need a cover sheet with the following

your Student number,

(this is very important it lets the marker check you have used numbers based on your student number)

your Name:

Subject: bus701 research methods 

Assignment:  Statistical modelling 

Section 1: Introduction 

Give an introduction to the assignment, part of your answer should paraphrase the following

"A company that makes a snack food has gathered data from its customers, it wants some graphical and numerical summaries of the data it wants following two Hypotheses to be answered

1) Is the proportion of people that prefer version 2 significantly different to 50%

2) Is the amount people are willing to pay significantly different to $2 "

Section 2: the problems of getting survey data in the real world

The data set in the assignment is not real world data

Discuss the problems of getting survey data in the real world, also discuss ethics you need to consider when gathering survey data. Also give an example of a real world product and give suitable survey questions.

You do not need to discuss why real world data was not used, every student needs their own sample to prevent copying and comparing different samples helps students understand the main concept in statistics the "sampling distribution of an estimate" 

Section 3: Description of the data set

Describe the dataset and describe each of the variables,

For each variable answer the question is it categorical or numerical?

Section 4: Summary of the data set

Use the filter given in the data to find your sample and use excel or suitable webpages such as http://www.calculatorsoup.com/calculators/statistics/descriptivestatistics.php

http://www.shodor.org/interactivate/activities/Histogram/

http://www.wessa.net/rwasp_backtobackhist.wasp

to do the following.

a) For each variable below give a graphical and numerical summaries that describes the variable (in other words give the appropriate univariate statistics and graphical displays)

i) variable: Income

ii) Variable: How much they would pay?

b) For each pair of variables below give appropriate graphical and numerical summaries that describes the variable (in other words give the appropriate bivariate statistics and graphical displays)

i) The variables: Gender and "do they like the product"

ii) The variables "How much they would pay?" and gender

Also provide appropriate comments  

Section 5-

5a) Find a 95% confidence interval for the proportion of people that prefer version 2 , Note that you should  only consider  the people that liked the product because only they  were asked which version they prefer

5b) Just considering the people that like the product , find a 95% confidence interval for the mean of the variable "How much they would pay".

Every student will have a different sample so they will use different summary statistics

To find your sample download the data set https://app.box.com/s/zlzjujmo3cq1jst35jummv8118pc0h0e

Section 6:  simple Hypothesis tests

6a) Just considering the proportion of people that like the product

Test the claim proportion that prefer version 2 is  different to  50%

6b) Just considering the people that like the product.

Test the claim the mean of the variable "How much they would pay" different to $2

Use the same information you used in section 5a and 5b

The easiest way to do hypothesis testing using word is a similar question in the week 6 material cut and paste it into your assignment and change the numbers

Section 7: discuss the disadvantages of quantitative methods

What sort of questions are impossible to answer with close ended questions? In which circumstances do you need to use qualitative research?

Section 8: conclusion

Discuss what you learnt after thinking about the previous sections. Make sure you give a discussion of the results from section 6.

Assignment link -

https://www.dropbox.com/s/jdlpw44j8223ih2/Statistical%20Modelling%20Assignment.rar?dl=0.