Question

The box plot below shows the total amount of time, in minutes, the students of a class surf the Internet every day:

A box plot is shown. The left-most point on the plot is 20 and the right-most point is 95. The box is labeled 37.5 on the left edge and 60 on the right edge. A vertical line is drawn inside the rectangle at the point 50.



Part B: Calculate the interquartile range of the data, and explain in a sentence or two what it represents. (4 points)

Part C: Explain what affect, if any, there will be if an outlier is present. (2 points)

Answer 1

Let cost price = x

If it is sold at 15% gain,

15% of x = x x 15/100 = 0.15x

selling price = x + 0.15x = 1.15x

If it is sold at 20% gain,

20% of x = x x 20/100 = 0.2x

selling price = x + 0.2x = 1.2x

$\sf \colorbox{gold}{{Given that }}$

1.2x - 1.15 x = 108 → 0.05x = 108 ⇒ x = 108/0.05 ⇒ x = Rs. 2160

Cost price is Rs. 2160.

Answer 2

Answer:

Let cost price = x

Let cost price = xIf it is sold at 15%

1.2x - 1.15 x = 108 → 0.05x = 108 ⇒ x = 108/0.05 ⇒ x = Rs. 2160

1.2x - 1.15 x = 108 → 0.05x = 108 ⇒ x = 108/0.05 ⇒ x = Rs. 2160Cost price is Rs. 2160.