![]() Since you are allowed boundary values, you don’t have to apply the compliment rule. ![]() This is helpful because it means you do not need to standardize (turn to z-scores) the values before using the command. The normalcdf( command takes inputs of the mean, standard deviation, and an lower and upper boundary. You can expect a question involving a normal probability computation on the AP ® Statistics exam. The computation of probabilities for random variables that are normally distributed is a core concept in the course. Refer to the video below for steps for doing this on your calculator. Remember to investigate a residual plot to confirm whether your proposed regression models the data well. Be aware that, when fitting a linear regression model to a set of data, the residuals are automatically stored in a list called RESID. Make sure that your regression diagnostics are turned on. It is unlikely that you will be asked to draw a scatterplot on the exam however, being familiar with creating and analyzing a scatterplot of bivariate data could prove crucial. ![]() In this post, I have compiled a list of 6 of the most important statistics features to know for the TI-84 Plus CE. While we don’t know if the paper and digital administrations will be the same format as prior years, several features of the TI-84 Plus CE Graphing Calculator will still be useful for you. Students and teachers are getting prepared for another unique year of AP ® exam administrations.
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