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).
After the hot summer months of July and August, things begin to cool down in Florence, Italy in September, when the autumn season is just beginning. During this month, the average temperature for the city starts off at 23Â°C, created by highs of 29Â°C during the daytime and lows of 17Â°C after dark. This average drops down to 19Â°C by the end of the month, created by highs of 24Â°C during the daytime and lows of 14Â°C after dark. ... Averages for Florence in September.