Using and Managing Data and Information Assignment
3 Note to students: There are FOUR tasks and you are expected to complete all of them. You are required to transfer the work of all tasks on to a single wordprocessed MS Word file and upload it on Turnitin, which is the submission of this assignment. The deadline for this assignment is (10th December 2020 before 3pm).
Task 1 A supermarket manager wanted to investigate the profile of shoppers resistant to the use of self-checkout counters available at the store he manages and to find out the reasons behind their resistance. He asks three of his staff to conduct a survey among customers using the store in Sheffield Hallam area during a quiet working day in October of 2019 as they exited the store. The short questionnaire used for the survey as well as the data collected can be found on an Excel file named “SCC”. There are two worksheet, one for the questionnaire used and the other worksheet for the raw data collected from the customers. The data worksheet has 18 columns. Column A “Customer” is simply a column to identify the customer surveyed – Customer 1, Customer 2 etc… Each of the other 17 columns refer to a question – Column B refers to the gender question, Column C refers to the age question etc… The manager has employed you as data analyst to conduct this investigation. Your analysis should use the statistical facilities on Excel as required below.
Required: 1. Label the codes for the categories of the following variables: • Gender • Age • Education • Are you a regular user of self-checkout user 2 2. Produce frequency and percentage frequency tables for each of the following variables: • Gender • Education • Age • SCC user • Spending (£) For this last quantitative variable, the categories should be as follows: <100 100- 109 110- 119 120- 129 130- 140 >140 3. Draw the graphical representation for each of the following variables: • Education (Pie chart) • Age (Bar chart) • Spending (Histogram) using the following categories: <100 100- 109 110- 119 120- 129 130- 140 >140 • Spending (Box and whisker) graph 4. Consider now the variable “Spending (£)”. • Calculate the minimum, maximum, median, quartiles and the mean average statistics. • Calculate the mean and standard deviation” split by users (and non-users) of SCC. 5. Produce a cross-table between each of the following two variables and draw an appropriate multiple bar chart: • Are you a regular user of self-checkout user and Gender • Are you a regular user of self-checkout user and Age 6. Draw a scatter diagram and calculate the correlation coefficient of Spending against the reliability total score. 𝑅𝑒𝑙𝑖𝑎𝑏𝑖𝑙𝑖𝑡𝑦 𝑡𝑜𝑡𝑎𝑙 𝑠𝑐𝑜𝑟𝑒 = 𝑅𝑒𝑙1 + 𝑅𝑒𝑙2 + 𝑅𝑒𝑙3 + 𝑅𝑒𝑙4
3 Note: The tasks and all their requirements should be clearly separated (preferably each task starts on a separate page). All variables should be clearly named and their correct categories clearly labelled. Graphs should be appropriate and correctly labelled and each of them on the same page. Any calculations should be clearly presented and explained. Task 2 A plumber has decided to use the techniques of project management in order to plan a job. He knew all the different activities of the job, their precedence and their average durations. They are shown on the table below.
A 1 None
B 2 None
C 3 A and B
D 1 None
E 2 A and C
F 4 E
G 3 D
H 2 F
I 1 H
J 1 G and I
1. Draw a network diagram representing the sequence of activities and the
dependence between them.
2. Determine how long it will take to complete the job by conducting the
3. By conducting the backward pass, identify the critical path and the noncritical
The work for this task should be produced using Word drawing facilities. The
forward and backward passes should be clearly shown on the diagram. The
calculations should be shown next to the network diagram.
The quarterly sales figures for the number of shoes (pairs) sold at a shoe shop
is shown on the table below.
Year Quarter Sales
2015 1 139
2016 1 145
2017 1 150
2018 1 156
1. Draw a line graph to represent the sales figures.
2. Calculate the moving averages.
3. Calculate the centre moving averages
4. Present the original sales data and the trend of sales figures on the same line
A small cheese maker specialises in two types of cheese – Brie and Gouda
that he makes and sells in packets of 400 grams. The cheese maker has
estimated that each packet of Brie uses 1.8 litres of special milk and 100
grams of special salt. For the Gouda cheese packet, the amounts of special
milk and salt needed are 1.2 litre and 150 grams respectively. The cheese
maker has a limited supply of special milk and salt and a maximum of only
120 litres of milk and 12000 grams of salt is made available each week. Once
produced and sold, the Brie packet returns a £2.80 profit and £2 profit for the
1. Enter the information on the table below into an Excel file. You should also
insert an appropriate formula for “Total profit” and quantity “Used” for each
of the “milk” and “salt” resource in the cells as indicated below.
Packet Brie Gouda
Quantity 0 0 Total
2.8 2 Insert
Used Symbol Max
2. Find the solution of the linear programming problem (using Excel Solver) 3.
Advise on the production of each type of cheese that yield maximum profit.