Frequency distribution refers to a set of frequencies with a  particular set of values into which a statistical population is  grouped. Relative frequency refers to data preâ¦sented in a table  that demonstrates the relative frequency of multiple  non-overlapping classes.
1 The annual average temperature in Florence, Tuscany, Italy is mild at 14.6 degrees Celsius (58.3 degrees Fahrenheit). 2  Average monthly temperatures vary by 18.4 C (33.1 F) which is a slightly low range. 3  The average diurnal temperature variation/ range is 11 C (19.8 F).
The average maximum daytime temperature in Austria in September is a comfortable 21Â°C (70Â°F). There are usually 6 hours of bright sunshine each day, which represents 45% of the 13 hours of daylight. Expect 42mm (1.7 inches) of rainfall across the whole of September with 10 days with some rain falling.