%% Use Group Numbers to Split Data
% Use group numbers to split patient height measurements into groups by gender. Then calculate the mean height for each group.
% Load patient heights and genders from the data file patients.mat.

load patients
whos Gender Height

%
% Specify groups by gender with findgroups.

G = findgroups(Gender);

%
% Compare the first five elements of Gender and G. Where Gender contains  'Female', G contains 1. Where Gender contains 'Male', G contains 2.

Gender(1:5)

%

G(1:5)

%
% Split the Height variable into two groups of heights using G. Apply the  mean function. The groups contain the mean heights of female and male patients, respectively.

splitapply(@mean,Height,G)

% Copyright 2015 The MathWorks, Inc.