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

Question

The points in the graph below represent the halts of a lift for a duration of 1 minute, over a period of 1 hour. Which of the following statements are correct?

i. The elevator 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.

A. Only i  B. Only ii  C. Both i and ii  D. Neither i nor ii

Accepted Answer

Neither statement i nor statement ii is correct  (Answer D) A scatter plot shows floor level (y-axis) vs. time (x-axis) for lift halts. Each plotted point represents the floor at which the lift stopped during each 1-minute interval over 1 hour. We need to check statement i (does the lift ever go directly between two non-ground floors?) and statement ii (does the fourth floor have the most halts?). By reading the scatter plot carefully, both statements are found to be incorrect, so the answer is D.