Question

Which graph would provide the best estimate of the area under the purple curve, between x = 0.5 and x = 2?

Answer 1

Graph A

Explanation:

The more sample you have under the curve, the more accurate it is.

Graph B is over estimating. You can literally see the corner of the rectangle overshoot the line of the graph.

Graph C is alright, but doesn't have as many rectangles to estimate the curve as graph A.

Graph D is overestimating like graph B. It has few rectangle is and overshooting above the line of the graph.