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Is a unique mode the same thing as a mode?
No. Some distributions and some sets of observations can have more than one modes. In such cases there is no unique mode.
What is the only measurement of central tendency that need not be unique?
The mode need not be unique. Furthermore, it may not exist.
How to work out mode?
Take your dataArrange it so that you can count or tally the occurrence of each unique data itemFinalise your tally - the unique data item with the highest count is the mode.Sometimes you may find that you have more than one mode - i.e. there are two or more unique data items that have the same highest tally
How do you get the mode for 1 2 3 4 5 6 7 8 9 10 11?
none of the data repeat (they are all unique) so there is no mode.
When there is no mode in a problem can you just write all the numbers?
I wouldn't, I would just say that there is no unique mode. While it is true that if all numbers have a frequency of 1 then every value is the mode, however this provides no analytical insight and thus it is pointless to say that all values are the mode. However it would be wise to note that if there is no mode then there is a uniform distribution which would indicate that all values are equally likely.
