1 arrange the numbers in order ascendingdescending doesnt really matter 2 find the middle number. A frequency diagram often called a line chart or a frequency polygon shows the frequencies for different groups. Sam put the numbers in order then added up.
3 if there are 2 middle numbers you will have to find the middle between the two numbers.
Sometimes a histogram will already be drawn for us. From the table we can see interesting things such as. Tally chart and frequency chart. Estimating values for the median and quartiles for grouped data than ungrouped data.