Count how many dots are on the plot. Since each dot is one data value, this tells you how many numbers are in the data set. For an odd number of values, the median is the single middle one.

If there are $n$ values and $n$ is odd, the median’s position in the ordered list is $(n+1)/2$. After you know that position, count the dots from left to right until you reach that position, and see which number on the axis that dot is above. © ‍a⁠nik⁠ο​.ai

From the dot plot, write down all the data values (the number of calls for each representative), repeating a number as many times as there are dots above it. In Desmos, type something like L1 = {a,b,c,d,e,f,g} where each letter is one of the numbers from the plot. © ‍anі‌ко.⁠аi

On a new line in Desmos, type median(L1). Desmos will output a single number, which is the median of your data set. Match that number to the correct choice in the problem.

Each dot in the dot plot represents one sales representative’s number of calls. Count all the dots on the plot; there are 7 dots total.

For a data set with an odd number of values (like 7), the median is the single middle value when the data are arranged from least to greatest.

When there are $n$ data values and $n$ is odd, the position of the median in the ordered list is given by $(n+1)/2$.

Here, $n=7$, so the median is the $(7+1)/2 = 8/2 = 4$th value in the ordered list.

So you need to figure out what number of calls corresponds to the 4th dot when the dots are read in order from smallest to largest.

Starting from the leftmost dot on the plot, count the dots from left to right: 1st, 2nd, 3rd, and then the 4th dot. The 4th dot lines up above 10 on the horizontal axis. Ani⁠ko АІ Т​utοr

Therefore, the median number of sales calls is 10, which corresponds to choice B).