1. Key Stage 3 National Strategy Securing progression in handling data © Crown Copyright 2003 Year 8 slides

2. © Crown Copyright 2003 Note to teachers The following 16 still and animated slides are for use with the Interacting with mathematics in Key Stage 3 Year 8 handling data mini-pack. They can be used as alternatives to the poster and transparencies provided with the mini-pack. They are intended to provide the focus for whole class discussion, as suggested in the Year 8 handling data unit. The file ‘Y8 slide references’ on the CD-ROM ‘Securing progression in handling data’ cross-references each slide with the phases of the Year 8 unit.

3. The handling data cycle Specifying and planning Collecting data Interpreting and discussing Processing and representing evaluate results © Crown Copyright 2003

4. Television Number of females 13 15 37 21 14 Number of males 18 19 33 17 13 Number of hours watched 0 – 9 10 – 19 20 – 29 30 – 39 Over 39 Hypothesis: Pupils watch more TV than adults

5. Cycling Males who cycle 2 3 20 34 23 11 1 0 Total number of males 4 26 68 109 89 40 9 0 Height (cm) h  140 140  h  150 150  h  160 160  h  170 170  h  180 180  h  190 190  h  200 h  200 Hypothesis: Males who cycle to school are taller than those who don’t

6. 0 1 2 3 4 5 >5 Number of cans drunk in last 2 days 876543210876543210 Frequency (1000s) Drinks Hypothesis: Boys drink more than girls male pupils female pupils 543210543210

7. Hypothesis: Boys in our year are taller than girls Heights Height (cm)Number of boysNumber of girls 90 to 100 > 100 to 110 > 110 to 120 > 120 to 130 > 130 to 140 > 140 to 150 > 150 to 160 > 160 to 170 > 170 to 180 > 180 to 190 > 190 to 200 over 200 1 3 11 43 185 1 126 1 665 668 102 11 2 - 2 6 21 31 173 1 101 2 136 819 74 10 8 -

8. % secondary pupils 58.01 41.99 65.5 34.5 % of all pupils 39.99 59.61 60.85 39.15 England With a mobile phone Without a mobile phone With access to the internet Without access to the internet Hypothesis: More secondary pupils than primary pupils have access to the internet at home Internet

9. The handling data cycle Specifying and planning Collecting data Interpreting and discussing Processing and representing evaluate results

10. The handling data cycle Specifying and planning Collecting data Interpreting and discussing Processing and representing evaluate results

11. Football: Drawing pie charts Accurately construct a pie chart for one of the bar charts. Sketch pie charts to display this data. Compare the similarities and the differences between the two charts. Time of goals (Premiership) 16/12/01 Time of goals (Second Division) 16/12/01 6543210654321065432106543210 14 12 10 8 6 4 2 0 022.54567.590 Time (Mins) FrequencyFrequency

12. Football: Calculating averages Estimate the median and mode for the Premiership or Second division. Compare the results. What does each average tell you about the charts? Extension: Repeat for first and third divisions. Time of goals (Premiership) 16/12/01 Time of goals (Second Division) 16/12/01 6543210654321065432106543210 14 12 10 8 6 4 2 0 022.54567.590 Time (mins) FrequencyFrequency

13. J F M A M J J A S O N D 20 18 16 14 12 10 8 6 4 2 0 Temperature Month London Wellington Average monthly temperature in Wellington and London

14. Ireland Do the charts show that a there are more people under 15 in Ireland than in Greece b there are fewer people under 15 in Greece than in Ireland c there is a higher proportion of people under 15 in Ireland than in Greece? Greece Age of people in Greece and Ireland Under 15 Over 59 15-39 40-59

15. Photos: Estimating measures height weight age income time mean? median? mode? range?

16. Photos: Comparing groups Height Weight Age Income Time

17. Photos: Sketching distributions

18. Photos: Recognising distributions

19. © Crown Copyright 2003