​Practice​
​1.​ ​The number of points scored by Milton in a 20 -game basketball season is shown:​
​8, 15, 12, 22, 24, 32, 10, 16, 6, 21, 20, 24, 17, 22, 18, 8, 28, 20, 17, 25​
​a.​ ​Organise the data into a frequency table using class intervals of 10 and include a percentage​
​frequency column.​
​b.​ ​Construct a histogram for the data, showing both the frequency and percentage frequency on the one​
​graph.​
​c.​ ​Describe the data in the histogram as symmetrical, positively skewed or negatively skewed.​
​Class interval​
​Frequency​
​Cumulative Frequency​
​Frequency percentage​
​2.​ ​The number of wins scored this season is given for 20 hockey teams. Here are the raw data.​
​4, 8, 5, 12, 15, 9, 9, 7, 3, 7, 10, 11, 1, 9, 13, 0, 6, 4, 12, 5​
​a.​ O
​ rganise the data into a frequency table using class intervals of 5 and include a percentage​
​frequency column.​
​b.​ ​Construct a histogram for the data, showing both the frequency and percentage frequency on the one​
​graph.​
​c.​ ​Describe the data in the histogram as symmetrical, positively skewed or negatively skewed.​
​Class interval​
​Frequency​
​Cumulative Frequency​
​Frequency percentage​
​3.​ ​This frequency table displays the way in which 40 people travel to and from work.​
​ .​ C
a
​ omplete the table.​
​b.​ ​Use the table to find:​
​I.​ ​the frequency of people who travel by train​
​II.​ ​the most popular form of transport​
​III.​ ​the percentage of people who travel by car​
​IV.​ ​the percentage of people who walk or cycle to work​
​V.​ ​the percentage of people who travel by public transport, including trains, buses and trams.​