Cumulative Frequency Median Position. The formula to calculate median is. 40 1 151 0020 40 to.
In part a a surprising number of candidates found the median position the cumulative frequency on the y-axis but did not find the median mark on the x-axis. The position of the median is calculated using the formula 05 n 1 to give the position of the median value within the data set where n total number of data points. In the example you have a group of runners who.
Overall this question was done well by candidates.
We can obtain the median by looking for the value in the middle position. Median Income 1000s Frequency Relative frequency Cumulative frequency Cumulative relative frequency 35 to. Therefore the median is 28. While observing cumulative frequency column in the above table we find that 105 124 is the median class it means median lies between 105 124.
