Normalcdf is the normal (Gaussian) cumulative distribution function on the TI 83/TI 84 calculator. If a random variable is normally distributed, you can use the normalcdf command to find the probability that the variable will fall into a certain interval that you supply. What is Normalcdf used to find? The normalcdf command is used for […]

Use the invNorm command when you are given a probability or percentage and asked to find an x value or z score. This command is often used to find values corresponding to percentiles or quartiles. Do you use invNorm for percentile? Percentiles. These are already in terms of area to left.Therefore, invNorm(0.40, mean, standard deviation […]

Select a shape, text box, or image. In the Arrange pane of the Format inspector, click a Flip button to flip an object vertically or horizontally. How do you flip an image on Mac? Rotate or flip an image Rotate an image: Select the image, then click. (or use the Touch Bar) to rotate the […]

What is the easiest way to resize a photo? The Photos app should be the default photo viewer for nearly every image type in Windows. Double-click the image file you want to resize to open it in Photos. Once it’s opened, click the three dots in the top-right corner, then click “Resize.” A small pop-up […]

Ever had a workbook with multiple protected worksheets? Just open the workbook. Go to File > Info. Right on the top, you can see all protected worksheets and a link to unprotect them. Click to unprotect the ones you want to. Done. Can you unprotect multiple Excel sheets at once? Unprotect Multiple Worksheets at Once […]

To get started, simply open the Facebook page and select Reply underneath the comment you would like to respond to. Type your reply and then click Enter. Your reply will now be displayed in the comments section for all to see. How do you respond to a comment on Facebook? In the top right of […]

The formula used for the average growth rate over time method is to divide the present value by the past value, multiply to the 1/N power and then subtract one. “N” in this formula represents the number of years. How do we calculate growth rate? The formula is Growth rate = Absolute change / Previous […]

If a child’s weight is at the 50th percentile line, that means that out of 100 normal children her age, 50 will be bigger than she is and 50 smaller. Similarly, if she is in the 75th percentile, that means that she is bigger than 75 children and smaller than only 25, compared with 100 […]

In common use, the percentile usually indicates that a certain percentage falls below that percentile. For example, if you score in the 25th percentile, then 25% of test takers are below your score. The “25” is called the percentile rank. Is the 95th percentile the top 5 %? The term 95th percentile refers to the […]

Percentile ranks are often expressed as a number between 1 and 99, with 50 being the average. So if a student scored a percentile rank of 87, it would mean that they performed better than 87% of the other students in his norm group. What does 95th percentile mean? The percentile number. The 95th percentile […]