Using and Managing Data and Information
April 2022 cohort
BA3020QA – Assignment 3
Note to students:
There are FIVE 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 (8th January 2023 before 3pm).
Task 1 (25 Marks)
A car dealer specialises in selling six types of cars named simply as ‘Touring’,
‘Cruiser’, ‘Standard’, ‘Supreme’, ‘Sports’ and ‘Adventure’. The shop wants you to create an Excel sales table consisting of the following entries:
| Car type
|
Number of units sold | Price (£) | Total (£) |
You need to use data-validation to retrieve any car (and its price) as a list for the cell presented in the shaded region above. The price (£) should be retrieved from the following table using an XLOOKUP formula. The number of cars (N° of units) should not exceed THREE. The Total (£) column should be calculated using the following Excel formula:
???????????????????? = ????° ???????? ???????????????????? ???????????????? × ????????????????????
| Car type | Price (£) |
| Adventure | 8,000 |
| Sports | 9,000 |
| Supreme | 15,000 |
| Standard | 7,000 |
| Cruiser | 12,000 |
| Touring | 11,000 |
Required:
Demonstrate the use of Excel data validation by producing some useful screenshots. Include formulae to show your understanding of how to use the data validation facility in Excel to retrieve information for specific cases from the table above. You should show how to retrieve the price and total (in £) for the ‘Sports’ car.
Note:
All your screenshots and explanation should be included on a maximum of TWO pages.
2 (25 Marks)
An airline company surveyed 80 passengers regarding their experience through the airport. They wanted to examine the level of passenger satisfaction and the time taken to get through the airport. The satisfaction level is measured using scores from 0=Not at all satisfied to 60=Very satisfied. The time through the airport was measured by providing each passenger a card once they had checked in at the airport, then returned to an agent once the passenger had reached the departure lounge, the time was measured in minutes. The following questionnaire was used, and the data was recorded in a filename “AirportA22.xlsx”.
| The Questionnaire | |||||
| About you and your travel | |||||
| Q.1:
Are you [Age]: |
1. <20 | 2. 20 to 29 | 3. 30 to 39 | 4. 40 to 49 | 5.
50 and over |
| Q.2:
Are you travelling today for [Type]: |
1. Business | 2. Holiday | 3. Family visit | ||
| Q.3:
Are you travelling in [Class]: |
1. Business class | 2. Economy class | |||
| Q.4: How many pieces of [luggage] are you travelling with?
Please state: ……………… |
|||||
Required:
- a) Produce a well labelled frequency and percentage frequency tables for each of the following variables:
- Age
- Type (of travel)
- Draw a well labelled pie chart representing the variable “Age”.
- Use Excel formulae to calculate the descriptive statistics (Location and spread) for the variable “Satisfaction”. The descriptive statistics should include the minimum, maximum, both quartiles, mean, median, variance, standard deviation, range and inter-quartile range. Please note that the statistics should be presented correct to a whole number but the mean and standard deviation should be presented correct to the nearest 1 decimal place. You should also show the formulae used for statistics.
- Draw a well labelled box plot for the variable “Satisfaction” split by
“Class” of travel.
- Draw a scatter diagram of the “satisfaction” score against “time” taken and show the linear regression equation in context (not in x and y). Use an Excel formula to calculate the correlation coefficient (2 decimal place)
Note:
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.
3 (10 Marks)
The quarterly sales figures for the number of shoes (pairs) sold at a shoe shop is shown on the table below. Enter the following data into Excel.
| Year | Quarter | Sales |
| 2018 | 1 | 149 |
| 2 | 145 | |
| 3 | 101 | |
| 4 | 123 | |
| 2019 | 1 | 155 |
| 2 | 147 | |
| 3 | 95 | |
| 4 | 128 | |
| 2020 | 1 | 160 |
| 2 | 151 | |
| 3 | 99 | |
| 4 | 129 | |
| 2021 | 1 | 166 |
| 2 | 159 | |
| 3 | 115 | |
| 4 | 135 |
Required (using Excel):
Draw a clearly labelled line graph to represent the sales figures (trendline not required)
Task 4 (15 marks)
A small hotel in central London has 6 rooms. Based on data collected over the last five years, it was estimated that the probability a room is occupied on any particular “weekend” night (Saturday and Sunday) is 0.75. This is the probability of success. On any particular “weekend” night, a hotel is only occupied (Success) or not occupied (Failure). There are no other possibilities.
Required:
What is the probability that at least 4 of the 6 hotel rooms are occupied on any weekend night?
Note:
Show all your calculations in well laid-out Excel spreadsheet tables with clear headings and include formulas. Give your answers correct to 3 decimal places.
5 (25 Marks)
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.
| Activity | Duration (days) | Preceding activities |
| 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 |
Required:
- Draw a network diagram representing the sequence of activities and the dependence between them.
- Determine how long it will take to complete the job by conducting the forward pass
- By conducting the backward pass, identify the critical path and the noncritical path(s).
Note:
The work for this task should be produced using Word drawing facilities. The forward and backward passes should be clearly shown on the diagram. Each activity should be described using the notation shown in class as follows:
| Activity name | Earliest start time | Earliest finish time |
| Activity duration | Latest start time | Latest finish time |
