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Question

The points in the graph below represent the halts of a lift for durations of 1 minute, over a period of 1 hour.


Which of the following statements are correct?
i. The elevator never moves directly from any non-ground floor to another non-ground floor over the one hour period
ii. The elevator stays on the fourth floor for the longest duration over the one hour period

The correct answer is
Neither i nor ii

To determine the correct statements about the lift's operation, we need to analyze the given graph carefully.

Lift operation graph

Analysis of Statement i:

Statement i claims that the elevator never moves directly from any non-ground floor to another non-ground floor over the one-hour period.

Looking at the graph, we observe that there are instances where the lift moves directly between non-ground floors. For example, it moves from floor 4 to floor 3 between the 20th and 21st minute.

Thus, statement i is incorrect.

Analysis of Statement ii:

Statement ii claims that the elevator stays on the fourth floor for the longest duration over the one-hour period.

Upon analyzing the time durations on each floor from the graph:

  • Floor 4: The lift is present at the 2nd, 20th, and other moments, but not for the longest duration overall.
  • Floor 0: It can be observed from the graph that the lift has the highest number of stops on the ground floor (Floor 0).

Thus, statement ii is also incorrect.

Conclusion:

Since neither statement i nor statement ii is correct, the answer is:

Neither i nor ii
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Important Questions from Data Interpretation

  1. The table given below shows the earnings of two persons on five different days.

    Earnings
    Days PQ
    Monday105150
    Tuesday96110
    Wednesday65122
    Thursday115106
    Friday13068
    What is the ratio of total earnings of P to the total earnings of Q? 
  2. The table below shows the number of toys of 6 different colours sold from a shop during a given period. The table also shows the percentage of toys of each colour which are cars.

    ColourTotal toysPercentage of cars
    C150012
    C260015
    C340012.5
    C455010
    C565020
    C645010

    What is the total number of car toys of C2 and C3 taken together?

  3. Study the given graph carefully and answer the question that follows. The graph shows the demand and production of different companies.

    The ratio between the companies having more production than demand and more demand than production is:

  4. Study the given table and answer the question that follows. The given table shows the number of new employees added to different categories of employees in a company for four years and the number of employees from these categories who left the company every year.

     

    During the period between 2001 and 2004, the total number of Technicians who left the Company is what percentage (rounded off to the nearest integer) of the total number of Technicians who joined the Company?

  5. The given pie-chart shows the percentage distribution of 20,000 employees in a company. Study the given chart and answer the question that follows. If 30% of the employees in department D are females, then how many male employees are there in that department?

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