What is the median for the set of data? 1 3 3.5 4

The median is the middle number in the data set when the data set is written from least to greatest.

So let's write our data set form least to greatest.

We have 1, 3, 3.5, 4.

Since there is an even number of numbers in the data set, we add up the two numbers that are in the middle and divide by 2.

So 3 + 3.5 gives us a sum of 6.5.

Now divide 6.5 by 2 to get a quotient of 3.25.

So the median of the data set is 3.25.