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 daily temperature in Milan in this month is 18 C (64 F) , reaching highs of 24 C (75 F) , and dropping to an average minimum temperature of 12 C (54 F) .verages for Milan in September. The weather in September sees the last of the summer heat, as autumn begins in the city. This means that the temperatures drop slightly, compared to the preceding months, but remain warm and pleasant.