The area function can calculate an area (a) above the curve (b) below the curve or (c) both above and below. A couple of very useful online calculators: This Desmos calculator will show you the different shadings for any function; You’ll want to make this your first step as it will...
Upper and lower sums enable you to find the area under a curve. A lower sum is calculated by adding up the areas of inscribed rectangles, while an upper sum is calculated by adding up the areas of circumscribed rectangles. When the number of rectangles increases to infinity, the upper and...
Questions about standard normal distribution probability canlookalarming but the key to solving them is understanding what the area under a standard normal curve represents. The total area under a standard normal distribution curve is 100% (that’s “1” as a decimal). For example, the left hal...