The Modal group is the one with the highest frequency, which is 20 – 29: L = 20 (the lower class boundary of the modal class)

Answer: The modal class is the group with the highest frequency. In this case, it is the two groups corresponding to 7. To work out the mean you will need to multiply the midpoint of each group by the frequency, add this column up, and divide the answer by the total frequency.

What is the modal average wage? The mode is the value which occurs most often in a set of data. Three people were all paid £305, this is the most common value.

1. Answer:
2. Step-by-step explanation:
3. So, Modal class = 125-145.
4. Lower limit of modal class = 125.
5. So, Median class =125-145.
6. Upper limit of median class = 145.
7. Hence the difference between the upper limit of the median class and the lower limit of the modal class is 20.

two types

The points plotted as part of an ogive are the upper class limit and the corresponding cumulative absolute frequency or cumulative relative frequency. The ogive for the normal distribution resembles one side of an Arabesque or ogival arch, which is likely the origin of its name.

Cumulative frequency is used to determine the number of observations that lie above (or below) a particular value in a data set. The cumulative frequency is calculated using a frequency distribution table, which can be constructed from stem and leaf plots or directly from the data.

A Frequency Curve is a smooth curve which corresponds to the limiting case of a histogram computed for a frequency distribution of a continuous distribution as the number of data points becomes very large.

It facilitates comparison of two or more frequency distributions on the same graph. 4. It gives an idea of the pattern of distribution of variables in the population.