EXCEL操作参考了How to Create a Normal Probability Plot in Excel (Step-by-Step) (statology.org),图片为个人截图 所用EXCEL版本为2016
A method of choosing threshold values between anomalous and background geochemical data, based on partitioning a cumulative probability plot of the data is described. The procedure is somewhat arbitrary but provides a fundamental groupin...
cumulative:aTRUEorFALSEvalue. TRUE represents the cumulative distribution function and FALSE represents the probability mass function. The dataset showcases 10 students’ IDs, names, and marks in the final exam. Plot the normal distribution of the marks with mean and standard deviation: Step 1- Ca...
Step 2:Click “Graph”on the toolbar and then click “Probability plot.” Step 3:Click the “Single” probability plot image. This is the option you’re likely to use 99% of the time in elementary statistics. Step 4:Choose a variable nameand then click “Select” to move the variable...
4. Using Computer Software (Excel) Software such as Excel makes the computation of normal probabilities even easier. The function NORMSDIST(z) returns the cumulative probability P(Z ≤ z) for a given z-score. The function NORMSINV(probability) does the opposite: it returns the z-score correspo...
Calculate Normal Distribution Probability in Excel: Less thanStep 1: Click an empty cell. Step 2: Click “Insert Formula”. Step 3: Type “Normdist” into the search box and then click “Go.” Step 4: Select “NORMDIST” from the list and then click “OK” to open the Function ...
If the sample data were taken from a normally distributed random variable, then the plot would be approximately linear.Examine the following probability plot. The center line is the relationship we would expect to see if the data were drawn from a perfectly normal distr...
Almost all of the statistical software packages include a procedure for obtaining the graph of a normal probability plot that can be used to test the normality of data. Errors in the measurements can also act in a multiplicative (rather than additive) manner. In that case, the assumption of ...
You get ready to e-mail your report to your customer, but you happen to note the p-value on the normal probability plot. It is less than 0.05. Oh no! Your data are not normally distributed! It has to be normally distributed to determine Cpk! Your customer is not going to like this...
For more on how to use named formulas in a chart, see theDynamic Chartspage of the author's web site. Use the shareware add-in, TM Plot Manager If you have not already done so,download and install the add-in. The add-in plots a complete graph from a formula in a single Excel wor...