Statistics


 * AWS Statistics Level 4 **







=**Creating stem and leaf graphs: **=
 * Just as tally charts and frequency tables can be used to record data as it is being collected, **
 * so too can a stem and leaf graph be used this way. **

**The numbers outside the parallel lines form ** **the leaf part of the graph. Leaf numbers ** **are usually written as single digits. ** **The first row of numbers shown by this graph are 8, 9, 4, 3, 1 and 7. ** **The fourth row of numbers are 30, 31, 30 and 31. **
 * Example: Pupils in Martin’s class were asked the day of the month that their birthdays were on. **
 *  As they called out the dates, Martin recorded the dates using a stem and leaf graph. **
 * 0 **
 * 1 **
 * 2 **
 * 3 **
 * 8, 9, 4, 3, 1, 7 **
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">9, 8, 2, 0, 6, 7, 6 **
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">8, 4, 3, 1, 6, 7, 2, 0 **
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">0, 1, 0, 1 **
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">The numbers 0, 1, 2 and 3 **
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">written between the parallel **
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">lines, form the stem part of **
 * <span style="font-family: 'Comic Sans MS',cursive; font-size: 110%;">the graph. **

**<span style="font-family: 'Comic Sans MS',cursive;">List the numbers that are in the 20’s. Answer: 28, 24, 23, 21, 26, 27, 22 and 20. **