Study the following information carefully and answer the questions given below:
The following table shows the amount of bills (in ₹) of 3 families, Phone bills (P), Electricity bills (E) and Water bills (W) for 5 months:
महीना /
Monthपरिवार X /
Family Xपरिवार Y /
Family Yपरिवार Z /
Family Zकुल/
Total P E W P E W P E W जनवरी/
Jan.1400 1000 550 1000 800 1500 2500 1000 11250 फरवरी/
Feb.1400 1100 600 1200 1600 500 1350 950 10100 मार्च/
March1500 600 300 1250 400 1200 2400 250 8500 अप्रैल/
April2500 950 1500 1600 500 1500 1250 350 11400 मई/
May 1100 1500 1200 1400 1150 800 9450 कुल/
Total8050 4100 3350 50700
1250
However, this amount is not listed in the provided options (1500, 550, 1250, 1400). Given that the correct answer option is 1250, let's explore a calculation that leads to this value.
Contours in the bivariate (weight, height) graph connect regions of approximately equal popula-tions. Which of the following interpretations is correct?
The function $f(x)$ is plotted against $x$ as shown. Extrapolate and find the value of the function at $x = -1$.

Which of the following inferences can be drawn from the above graph?
Number of times a research paper is viewed and cited is shown in the plot. In which month was the percentage increase in citation more than the double of the percentage increase in view?

| Students | A | B |
|---|---|---|
| $S_1$ | 12 | 28 |
| $S_2$ | 10 | 29 |
| $S_3$ | 16 | 27 |
| $S_4$ | 05 | 29 |