The different bars in the diagram above provide information about different orders in various categories (Art, Binders, ....) that were booked in the first two weeks of September of a store for one client. The colour and pattern of a bar denotes the ship mode (First Class / Second Class / Standard Class). The left end point of a bar indicates the booking day of the order, while the right end point indicates the dispatch day of the order. The difference between the dispatch day and the booking day (measured in terms of the number of days) is called the processing time of the order.
For the same category, an order is considered for booking only after the previous order of the same category is dispatched. No two consecutive orders of the same category had identical ship mode during this period.
For example, there were only two orders in the furnishing category during this period. The first one was shipped in the Second Class. It was booked on Sep 1 and dispatched on Sep 5. The second order was shipped in the Standard class. It was booked on Sep 5 (although the order might have been placed before that) and dispatched on Sep 12. So the processing times were 4 and 7 days respectively for these orders.
Solution
Understanding the set :-
- This is a bar graph set, which provide information about different orders in various categories
- Colour and pattern of a bar denotes the ship mode (First Class / Second Class / Standard Class)
- Left end point of a bar indicates the booking day of the order, while the right end point indicates the dispatch day of the order
- Difference between the dispatch day and the booking day (measured in terms of the number of days) is called the processing time
- For the same category, an order is considered for booking only after the previous order of the same category is dispatched
In Data interpretation set, Most important part is to understand and analyze the diagram/ properly, as in this kind of set you won't be able to make any definite table which can answer all question, rather you need to solve the set according to each question's demand.
Only table we can make in this is to convert the diagrammatic presentation to tabular one, to analyze data more easily.
| Categories | Standard Class | First Class | Second Class |
|---|---|---|---|
| Arts | 1-3, 13-21 | 4-6 | 3-4, 6-13 |
| Binders | 1-2 | 4-5 | 2-4, 5-16 |
| Paper | × | 4-7 | 2-4, 7-12 |
| Phones | 2-4, 5-17 | 4-5 | × |
| Appliances | 4-12 | × | 2-4 |
| Bookcases | × | 4-6 | 3-4, 6-7 |
| Fasteners | 2-4, 6-8 | × | 4-6 |
| Furnishings | 5-12 | × | 1-5 |
| Labels | 4-12 | × | 1-3 |
| Tables | 2-4 | × | 4-10 |
| Chairs | 2-3 | × | 3-9 |
| Accessories | 1-19 | × | × |
| Envelopes | 3-7 | × | × |
| Storage | 7-22 | × | 2-7 |
In the table,
First column list down all the categories
Second column list the dates on which standard class products are booked- dispatched.
Third column list the dates on which First class products are booked- Dispatched.
Fourth column list the dates on which Second class products are booked- Dispatched.
For eg - second class arts products are booked on 3rd sep and dispatched on 4th sep.
The difference between the booked date and dispatched day will be the processing time.
For eg - Processing time of Third column list the dates on which First class products are booked- Dispatched will be 1 day (4 sep - 3 sep)
x - indicates that there were no orders of that class for a particular category.
| Categories | Standard Class | First Class | Second Class |
|---|---|---|---|
| Arts | 1-3, 13-21 | 4-6 | 3-4, 6-13 |
| Binders | 1-2 | 4-5 | 2-4, 5-16 |
| Paper | × | 4-7 | 2-4, 7-12 |
| Phones | 2-4, 5-17 | 4-5 | × |
| Appliances | 4-12 | × | 2-4 |
| Bookcases | × | 4-6 | 3-4, 6-7 |
| Fasteners | 2-4, 6-8 | × | 4-6 |
| Furnishings | 5-12 | × | 1-5 |
| Labels | 4-12 | × | 1-3 |
| Tables | 2-4 | × | 4-10 |
| Chairs | 2-3 | × | 3-9 |
| Accessories | 1-19 | × | × |
| Envelopes | 3-7 | × | × |
| Storage | 7-22 | × | 2-7 |
Average processing time for Arts
/ 5
=
=
= days
Average processing time for Binders
=
=
= days
Average processing time for Paper =
=
=
= days
Average processing time for Phones
=
=
= days
Therefore, the decreasing order is Phones, Art, Binders, Paper