The main advantages of percent distributions have over frequency
distributions when comparing populations at different years
are:
- It provides easier view or way to compare data because obvious
that percentages are always better for comparison than large
numbers.
- The percentage distribution is more reliable as it constructed
from frequency distribution for better results.
- Percentage distribution shows how much parts of the data are
contained in an interval.
- It also helps in considering the shape of the distribution
while frequency distribution doesn't draw any conclusion regarding
shape.
- For comparing populations at different years, percentage
distribution can show the difference in how the increase or
decrease of populations between two or more populations.
- Percentage distribution is easier to interpret the population
between two or more populations.