Vending MachinesVending Machines

Chang Hehao, Bernard Chang Hehao, Bernard Lim, Poh Jer Lin, Raghav Lim, Poh Jer Lin, Raghav

Mathur (M07203)Mathur (M07203)

Problem AreaProblem Area

Some people find that the school’s Some people find that the school’s vending machines offer too small a vending machines offer too small a variety of food and drinks, and that variety of food and drinks, and that the machines are faulty.the machines are faulty.

Mode of Data CollectionMode of Data Collection

We did a random survey of 50 We did a random survey of 50 students in the canteen during our 5 students in the canteen during our 5 hour free period from 10.30am to hour free period from 10.30am to 3.30pm by person.3.30pm by person.

Arrangement and tabulation of dataArrangement and tabulation of data

We used a tally chart to tally the We used a tally chart to tally the data.data.

We counted the number of tallies and We counted the number of tallies and recorded it down.recorded it down.

Presentation of dataPresentation of data

We presented the data using pie We presented the data using pie charts.charts.

Question 1Question 1

Are you generally Are you generally satisfied with the satisfied with the school’s vending school’s vending machines (The machines (The range of food and range of food and the working the working condition)? condition)?

23 Yes23 Yes

27 No27 No

Yes

No

Question 2Question 2

Do you think that the Do you think that the range of food and range of food and drinks offered in drinks offered in the school’s the school’s vending machines vending machines could be improved?could be improved?

43 yes 7 no43 yes 7 no

Yes

No

Question 3Question 3

If yes, what do you think If yes, what do you think should be added to should be added to the school’s vending the school’s vending machines current machines current range of food and range of food and drinks?drinks?

A 8 – Hot SandwichesA 8 – Hot SandwichesB 7 – Cup DrinksB 7 – Cup DrinksC 21 – A AND BC 21 – A AND BD 5 - OthersD 5 - OthersE 2 – A, B and othersE 2 – A, B and others

A

B

C

D

E

Question 4(Part 1)Question 4(Part 1)

Are any of the Are any of the school’s vending school’s vending machines faulty?machines faulty?

27 yes 23 no27 yes 23 no Yes

No

Question 4 part 2Question 4 part 2

If yes, which vending If yes, which vending machine is faulty?machine is faulty?

Coke Canned Drinks Coke Canned Drinks Machine 5Machine 5

Coke Bottles Drinks Coke Bottles Drinks Machine 13Machine 13

Heaven & Earth Canned Heaven & Earth Canned Drinks Machine 2Drinks Machine 2

Snack Machine 11Snack Machine 11Meiji Machine 2Meiji Machine 2

A

B

C

D

E

Question 5Question 5

A

B

C

D

How is it faulty?How is it faulty? Product is not Product is not

dispensed 14 dispensed 14 Wrong products Wrong products

dispensed 4dispensed 4 Others 2Others 2 A and Others A and Others

(Wrong Change is (Wrong Change is dispensed or coins dispensed or coins not accepted) 10not accepted) 10

Analysis Analysis

Based on the first question, we Based on the first question, we conclude that majority of the people conclude that majority of the people surveyed, are not satisfied with the surveyed, are not satisfied with the school’s vending machines range of school’s vending machines range of food and drinks and working food and drinks and working condition.condition.

Analysis (cont.)Analysis (cont.)

86% of the people surveyed think that 86% of the people surveyed think that the range of food and drinks offered the range of food and drinks offered could be improved. could be improved.

72% of the people surveyed think that 72% of the people surveyed think that hot sandwiches should be offered hot sandwiches should be offered while almost 70% think that cup while almost 70% think that cup drinks should be offered. drinks should be offered.

However there is no particular great However there is no particular great demand for any product specified.demand for any product specified.

Analysis (cont.) Analysis (cont.)

The majority also stated that some of The majority also stated that some of the school’s vending machines were the school’s vending machines were faulty. About 40% of the statistics faulty. About 40% of the statistics show that the Coke bottled drink show that the Coke bottled drink machine is faulty and a third of the machine is faulty and a third of the statistics state that the snack statistics state that the snack machine is faulty. machine is faulty.

Explanation for analysisExplanation for analysis

We chose to interpret the data this We chose to interpret the data this way so as to accentuate that there is way so as to accentuate that there is a problem present within the vending a problem present within the vending machines and that there is a solution machines and that there is a solution present.present.

Analysis (cont.)Analysis (cont.)

According to the survey results, the According to the survey results, the machine is usually faulty because it machine is usually faulty because it fails to dispense the product. Another fails to dispense the product. Another minor way that the machine is faulty minor way that the machine is faulty is that it dispenses the wrong is that it dispenses the wrong product.product.

ConclusionConclusion

We conclude that the majority of the We conclude that the majority of the students in our school are generally not students in our school are generally not satisfied with the school’s vending satisfied with the school’s vending machines. They think that more food machines. They think that more food and drinks should be offered, especially and drinks should be offered, especially hot sandwiches. The majority of the hot sandwiches. The majority of the school also think that the machines are school also think that the machines are faulty especially because they faulty especially because they sometimes do not dispense the product sometimes do not dispense the product chosen. chosen.

SolutionsSolutions

We recommend that the school add a hot We recommend that the school add a hot sandwich machine and repair all the sandwich machine and repair all the machines especially the coke bottle machines especially the coke bottle machine.machine.

If not, we could request the café and drink If not, we could request the café and drink stall uncles, which sell sandwiches, to stall uncles, which sell sandwiches, to serve hot sandwiches too, by showing serve hot sandwiches too, by showing them proof that there is hot demand for them proof that there is hot demand for hot sandwiches.hot sandwiches.

Implications of analysisImplications of analysis

Implications of the analysis: We have Implications of the analysis: We have sufficient evidence that the school is sufficient evidence that the school is unhappy with the vending machines and unhappy with the vending machines and therefore can request the school to add new therefore can request the school to add new vending machines and service and repair vending machines and service and repair them regularly.them regularly.

Data presented : The pie chart for Q2, Q4 Data presented : The pie chart for Q2, Q4 and Q5 accentuate the potential cause of the and Q5 accentuate the potential cause of the problem that the school is not satisfied with problem that the school is not satisfied with the vending machines. Q3 and Q4 (ii) and Q5 the vending machines. Q3 and Q4 (ii) and Q5 accentuate the potential solution. To service accentuate the potential solution. To service the machines and add new machines.the machines and add new machines.

Mode of data collectionMode of data collection

Mode of data collection: By surveying Mode of data collection: By surveying people ourselves, we are able to people ourselves, we are able to ensure that people are not surveyed ensure that people are not surveyed more than once, unlike in online more than once, unlike in online surveys. They will tend to respond to surveys. They will tend to respond to us, unlike online surveys. By handing us, unlike online surveys. By handing out paper surveys, we might not be out paper surveys, we might not be able to get all the surveys back. By able to get all the surveys back. By surveying them ourselves, we are surveying them ourselves, we are also able to show others that we are also able to show others that we are sincere and serious about our work.sincere and serious about our work.

TimelineTimeline

Firstly, we will write a letter and Firstly, we will write a letter and attach it to our presentation and attach it to our presentation and address it to Mrs. Phang so that she address it to Mrs. Phang so that she can consider implementing our can consider implementing our solution. If she agrees, we will solution. If she agrees, we will contact the sandwich machine contact the sandwich machine vendor and request them to place a vendor and request them to place a machine in our school. We will also machine in our school. We will also ask the current vending machine ask the current vending machine operators to service their machines. operators to service their machines.

TimelineTimeline

If she disagrees, we will ask the If she disagrees, we will ask the canteen uncles to sell hot canteen uncles to sell hot sandwiches (with proof of demand sandwiches (with proof of demand from our survey).from our survey).