1. Finding the mean from a frequency table E.g. the following table shows the mean height of 30 students in our class. Find the mean height Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We first need to make sure the calculator is CL ea R of all previous content

2. Finding the mean from a frequency table We first need to make sure the calculator is CL ea R of all previous content Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

3. Finding the mean from a frequency table We want to clear All Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

4. Finding the mean from a frequency table Yes Reset all Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

5. Finding the mean from a frequency table We really do agree AC Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

6. Finding the mean from a frequency table We need to SET UP the Calculator into STATS to switch ON the Frequency option Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

7. Finding the mean from a frequency table We need to SET UP the Calculator into STATS to switch ON the Frequency option Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

8. Finding the mean from a frequency table We need to SET UP the Calculator into STATS to switch ON the Frequency option Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

9. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We need to SET UP the Calculator into STATS to switch ON the Frequency option

10. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We need to SET UP the Calculator into STATS to switch ON the Frequency option

11. Finding the mean from a frequency table We want the calculator in STATS mode Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

12. Finding the mean from a frequency table We want the calculator in STATS mode Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

13. Finding the mean from a frequency table We only have 1 variable Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864

14. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 135 145 155 165 175 We need to put in the mid interval values of the first row Pressing = After each one

15. Finding the mean from a frequency table We need to enter the mid interval values of the first row Pressing = After each one Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 135 145 155 165 175

16. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We need to enter the mid interval values of the first row Pressing = After each one 135 145 155 165 175

17. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We need to enter the mid interval values of the first row Pressing = After each one 135 145 155 165 175

18. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We need enter the mid interval values of the first row Pressing = After each one 135 145 155 165 175

19. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 Use the cursor keys to enter the data from the second row The down arrow takes you to the top of the column 135 145 155 165 175

20. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 Use the cursor keys to enter the data from the second row The right arrow takes you to the top of the next column 135 145 155 165 175

21. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We need to enter the Frequencies Pressing = After each one 135 145 155 165 175

22. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We need to enter the Frequencies Pressing = After each one 135 145 155 165 175

23. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We need to enter the Frequencies Pressing = After each one 135 145 155 165 175

24. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We have finished inputting the data. We now need to analyse the STATS Press AC 135 145 155 165 175

25. Finding the mean from a frequency table We need to analyse the STATS we have input Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 135 145 155 165 175

26. Finding the mean from a frequency table We need to analyse the STATS we have input Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 135 145 155 165 175

27. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We want use VAR iance 135 145 155 165 175

28. Finding the mean from a frequency table Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 We want to find the mean 135 145 155 165 175

29. Finding the mean from a frequency table Press = Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 135 145 155 165 175

30. Finding the mean from a frequency table The mean height of our class is 154cm Height (x cm) 130 - 140140 – 150150 – 160160 – 170170 – 180 Frequency 57864 135 145 155 165 175