Hi, I have a character variable which is about the surname of people. Many respondents entered the names as AA, BBB or ZZZZ which mean that they are not real names. So these cases should be deleted. Translating this question into this: how can I check if a character variable consists of all same letters? Note that the name has varying length. Thanks a lot for help.
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Hello, I have a dataset which has many variables. I don't need those variables which has 'f' in the last position of the name. For example, the names of those variables are like wagef, levelf, posf. Thanks for help.
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