Understanding Percentage Change If the price increased, use the formula [(New Price – Old Price)/Old Price] and then multiply that number by 100. If the price decreased, use the formula [(Old Price – New Price)/Old Price] and multiply that number by 100. How do you find Percent change in price and quantity demanded? Find the […]

Add or subtract seconds in Google Sheets You can use the TIME function to add or subtract up to 60 seconds: =Start time + TIME(0, 0, N seconds) For example, add 30 seconds: =A2+TIME(0,0,30) To calculate over 60 seconds, use simple maths: =Start time + (N seconds / 86400) Add 700 seconds: =A2+(700/86400) How do […]

If your test statistic is positive, first find the probability that Z is greater than your test statistic (look up your test statistic on the Z-table, find its corresponding probability, and subtract it from one). Then double this result to get the p-value. How do you find p-value from Z? To find out the z-score, […]

Marginal physical product, usually abbreviated MPP, is found by dividing the change in total physical product by the change in the variable input. Marginal physical product, which more often goes by the name marginal product (MP), is one of two measures derived from total physical product. What is MPP formula? Subtracting the initial production from […]

Common Uses The One Sample t Test is commonly used to test the following: Statistical difference between a mean and a known or hypothesized value of the mean in the population. Statistical difference between a change score and zero. When should you use a one sample t test? The one sample t test compares the […]

Resizing Images Right-click the image you wish to make your company’s Twitter profile picture or post alongside a tweet. Click the “Resize” tab to be presented with the “Resize and Skew” window. Type the number 73 in both the “Horizontal” and “Vertical” boxes if you intend to use the image as a profile picture. How […]

Navigate to the icon or app you want moved to the desktop of your iPad. Press and hold on the icon until the icon starts jiggling. Drag the icon left or right toward your Home screen, and place the icon in its desired location. Release your finger from the screen of your iPad. How do […]