# Grouped-Frequency-Tables-Tally-Charts-Worksheet-A.pptx

1 Jun 2023
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### Grouped-Frequency-Tables-Tally-Charts-Worksheet-A.pptx

• 1. Frequency Tables & Tally Charts – Worksheet A The worksheet is in a 2 sizes.
• 2. 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’. Printing
• 5. Grouped Frequency Tables Mark Tally Frequency 0 to 9 4 10 to 19 5 20 to 29 6 30 to 39 2 40 to 49 3 Mrs Jenson collected the results from 20 maths tests. She wrote the results like this. Simplify the results and group them in the frequency table. 21, 27, 31, 6, 44, 26, 18, 5, 17, 25, 43, 22, 19, 11, 10, 20, 31, 41, 0, 7 Dr Lewis recorded the heights of 27 patients (in cm). 128, 65, 82, 110, 126, 108, 90, 88, 71, 122, 99, 80, 120, 125, 111, 82, 61, 128, 130, 70, 61, 74, 82, 66, 121, 115, 83 Height, h (cm) Tally Frequency 60 < h ⩽ 70 5 70 < h ⩽ 80 3 80 < h ⩽ 90 6 90 < h ⩽ 100 1 100 < h ⩽ 110 2 110 < h ⩽ 120 3 120 < h ⩽ 130 7 Total 27 ① ② What is the modal group? 120 < h ⩽ 130 20 to 29 What is the modal group? The pass mark was 25. How many students do you think passed? He decided to put the data into 7 groups. Which group would someone with a height of 120 cm go in to? Complete the tally chart for this information. Using only the table, how could Dr Lewis estimate a median and a mean? Use midpoints. ≈ 8 Answers
• 6. Grouped Frequency Tables Mark Tally Frequency 0 to 9 10 to 19 20 to 29 30 to 39 40 to 49 Mrs Jenson collected the results from 20 maths tests. She wrote the results like this. Simplify the results and group them in the frequency table. 21, 27, 31, 6, 44, 26, 18, 5, 17, 25, 43, 22, 19, 11, 10, 20, 31, 41, 0, 7 Dr Lewis recorded the heights of 27 patients (in cm). 128, 65, 82, 110, 126, 108, 90, 88, 71, 122, 99, 80, 120, 125, 111, 82, 61, 128, 130, 70, 61, 74, 82, 66, 121, 115, 83 Height, h (cm) Tally Frequency 60 < h ⩽ 70 70 < h ⩽ 80 80 < h ⩽ 90 90 < h ⩽ 100 100 < h ⩽ 110 110 < h ⩽ 120 120 < h ⩽ 130 Total ① ② What is the modal group? What is the modal group? The pass mark was 25. How many students do you think passed? He decided to put the data into 7 groups. Which group would someone with a height of 120 cm go in to? Complete the tally chart for this information. Using only the table, how could Dr Lewis estimate a median and a mean? Grouped Frequency Tables Mark Tally Frequency 0 to 9 10 to 19 20 to 29 30 to 39 40 to 49 Mrs Jenson collected the results from 20 maths tests. She wrote the results like this. Simplify the results and group them in the frequency table. 21, 27, 31, 6, 44, 26, 18, 5, 17, 25, 43, 22, 19, 11, 10, 20, 31, 41, 0, 7 Dr Lewis recorded the heights of 27 patients (in cm). 128, 65, 82, 110, 126, 108, 90, 88, 71, 122, 99, 80, 120, 125, 111, 82, 61, 128, 130, 70, 61, 74, 82, 66, 121, 115, 83 Height, h (cm) Tally Frequency 60 < h ⩽ 70 70 < h ⩽ 80 80 < h ⩽ 90 90 < h ⩽ 100 100 < h ⩽ 110 110 < h ⩽ 120 120 < h ⩽ 130 Total ① ② What is the modal group? What is the modal group? The pass mark was 25. How many students do you think passed? He decided to put the data into 7 groups. Which group would someone with a height of 120 cm go in to? Complete the tally chart for this information. Using only the table, how could Dr Lewis estimate a median and a mean?
• 8. Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths.co.uk