Flashcards: Summarizing numerical data sets

Consider the following data set:

\displaystyle \left \{ 1, 4, 5, 8, 8, 9, 10, 11, x, x \right \}

If \displaystyle x \ne 8, which is true of the mode or modes of the data set?

The set has one mode, 8.

The set has two modes, 8 and \displaystyle x.

The set has one mode, \displaystyle x.

The set has no mode.

The question cannot be answered from the information given.

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