Grouped Frequency Tables Averages Bingo Students should choose

Grouped Frequency Tables – Averages – Bingo Students should choose nine answers from the grid and place them randomly into a 3 x 3 square in their book. You may want to pause your display and choose questions according to difficulty during the game. Depending on time, students could win with a line, an X, or a ‘full house’ (all).

Printing To print handouts from slides Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

BINGO! 45 54 23 82 37 12 76 25 91 Mean from a Grouped Frequency Table

Choose your numbers… 30 43 32 2 21 158 4 27 47 20 126 114 5 13 10 33 Draw a 3 x 3 grid in your book.

Computer game loading time on different systems… Estimate a mean for this data. Time, t ( seconds ) Frequency Midpoint f×m 52 6 312 73 18 1314 88 30 2640 213 20. 0 seconds 4266

Pet dogs… Estimate a mean for this data. Weight, w ( kg ) Frequency Midpoint f×m 21 26 546 18 30 540 17 34 578 56 29. 7 kg 1664

Daily earnings of employees… Estimate a mean for this data. Spent, s ( £ ) Frequency Midpoint f×m 8 50 400 5 150 750 4 250 1000 17 £ 126. 47 2150

Students’ heights… Estimate a mean for this data. Height, h ( cm ) Frequency Midpoint f×m 4 135 540 7 165 1155 1 195 12 157. 5 cm 1890

‘Special delivery’ postal packages in a day… Estimate a mean for this data. Weight, w ( kg ) Frequency Midpoint f×m 8 3. 5 28 3 4. 5 14. 5 4 5. 5 22 64. 5 15 4. 3 kg

Scientists conducting a mental-maths experiment… Estimate a mean for this data. Time, t ( seconds ) Frequency Midpoint f×m 9 10 90 17 30 510 12 50 600 38 31. 6 seconds 1200

Corn harvested from different plots… Estimate a mean for this data. Weight, w ( kg ) Frequency Midpoint f×m 6 3. 5 21 11 10. 5 115. 5 5 17. 5 87. 5 22 10. 2 kg 224

Sales from a vending machine…. Estimate a mean for this data. Spent, s ( £ ) Frequency Midpoint f×m 6 0. 5 3 9 1. 5 13. 5 14 2. 5 35 6 3. 5 21 35 £ 2. 07 72. 5

Chimpanzees solving a video puzzle… Estimate a mean for this data. Time, t ( seconds ) Frequency Midpoint f×m 17 2 34 22 6 132 8 10 80 47 5. 2 seconds 246

Penguins at 6 months of age… Estimate a mean for this data. Height, h ( cm ) Frequency Midpoint f×m 6 27. 5 165 4 32. 5 130 4 37. 5 150 2 42. 5 85 16 33. 1 cm 530

Sales at a newsagents… Estimate a mean for this data. Spent, s ( £ ) Frequency Midpoint f×m 10 4 40 15 12 180 8 20 160 3 28 84 36 £ 12. 89 464

A chimpanzee population in a zoo… Estimate a mean for this data. Weight, w ( kg ) Frequency Midpoint f×m 4 10 40 8 20 160 15 30 450 5 40 200 32 26. 6 kg 850

Fast food counter service times… Estimate a mean for this data. Time, t ( seconds ) Frequency Midpoint f×m 8 25 200 13 75 975 21 125 2625 16 175 2800 58 113. 8 seconds 6600

Flower heights after 3 weeks… Estimate a mean for this data. Height, h ( cm ) Frequency Midpoint f×m 8 10 80 0 30 0 9 50 450 7 70 490 24 42. 5 cm

Sales from a takeaway… Estimate a mean for this data. Spent, s ( £ ) Frequency Midpoint f×m 8 5 40 10 15 150 12 25 300 11 35 385 41 £ 21. 34 875

Potted plants after 4 months… Estimate a mean for this data. Height, h ( cm ) Frequency Midpoint f×m 15 35 525 12 45 540 9 55 495 7 65 455 43 46. 9 cm 2015

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk