Question

from the following data draw two types of cumulative frequency curves and determine the median from graph​

Answer 1

first make a less than cumulative frequency table.

the lese than ogive's coordinates would be the Class Interval's upperlimit (x-coordinate)and the resp. cumulative frequency (y-coordinate).plot it in the graph.

the graph should have CI as the x-axis and cumulative frequency as it's y axis

then do the more than cf table.

draw the graph,where lower limit is x-coordinate and cf is y-coordinate.

the intersecting point should be marked andshould be extrapolated towards the x axis,this would be the median.