Mean from frequency tables A football team play 20 games, they record the number of goals they score in each game and record the data in a frequency table. Find the mean for the number of goals scored per game. Number of goals in the game Frequency 2 1 4 8 3 6 Total This is the total number of goals This is the total number of games Total number of goals Total number of games Mean= Mean= A class records the number of pets each pupil has. Find the mean number of pets per pupil. Number of pets Frequency 8 1 7 2 5 3 Total This is the total number of pets This is the total number of pupils Total number of pets Total number of pupils Mean= Mean=

Number of bags eaten Frequency Number of detentions Frequency The number of bags of sweets pupils eat in a day are recorded for 2 classes in year 8. Find the average number of bags eaten per day Number of bags eaten Frequency 10 1 15 2 20 3 5 Total This is the total number of bags eaten This is the total number of pupils Total number of bags Total number of pupils Mean= Mean= The number of detentions pupils in year 8 receive over a 4 week period are recorded. Find the mean number of detentions they receive. Number of detentions Frequency 63 1 45 2 37 3 55 Total This is the total number of detentions This is the total number of pupils Total number of detentions Total number of pupils Mean= Mean=

Extension A school is trying to reduce the number of late marks pupils receive. Here is the data for the whole of year 9 and the data for form 9U. Should the form tutor of 9U be happy with his form? 9U Whole year Number of late marks Frequency 20 1 73 2 72 3 33 4 Total Number of late marks Frequency 10 1 8 2 3 4 Total