Estimated Mean from Grouped Frequency Tables and Calculations
Learn how to calculate estimates for the mean from grouped frequency tables with different mass intervals provided in the examples. Practice and improve your understanding of statistical calculations based on grouped data.
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Presentation Transcript
Estimated Mean from a Grouped Estimated Mean from a Grouped Frequency Table (Version 2) Frequency Table (Version 2) Silent Teacher Intelligent Practice Your Turn Narration Mass, ? (kg) Frequency 0 < ? 10 2 10 < ? 20 4 20 < ? 30 8 30 < ? 40 6 Practice
Worked Example Your Turn Calculate an estimate for the mean: Calculate an estimate for the mean: Mass, ? (kg) Mass, ? (kg) Frequency Frequency 0 < ? 8 3 0 < ? 8 3 8 < ? 16 6 8 < ? 16 0 16 < ? 24 7 16 < ? 24 7 24 < ? 32 4 24 < ? 32 4
Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 6 8 20 20 Mass, ? (kg) 0 < ? 10 10 < ? 20 20 < ? 30 30 < ? 40 Frequency 1 2 4 3 1. 6. Mass, ? (kg) 0 < ? 10 10 < ? 20 20 < ? 30 30 < ? 40 Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 2 4 8 6 Frequency 6 8 0 20 2. 7. Mass, ? (kg) 1 < ? 21 21 < ? 41 41 < ? 61 61 < ? 81 Frequency 6 8 0 20 Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 2 4 8 6 3. 8. Mass, ? (kg) 1 < ? 21 21 < ? 41 41 < ? 61 61 < ? 66 66 < ? 81 Frequency 6 8 0 5 15 Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 6 8 4 2 4. 9. Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 6 8 4 20 Mass, ? (kg) 1 < ? 21 21 < ? 41 41 < ? 81 Frequency 6 8 20 5. 10.
Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 6 8 20 20 Mass, ? (kg) 0 < ? 10 10 < ? 20 20 < ? 30 30 < ? 40 Frequency 1 2 4 3 1. 6. 24kg 50kg Mass, ? (kg) 0 < ? 10 10 < ? 20 20 < ? 30 30 < ? 40 Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 2 4 8 6 Frequency 6 8 0 20 2. 7. 24kg 50kg Mass, ? (kg) 1 < ? 21 21 < ? 41 41 < ? 61 61 < ? 81 Frequency 6 8 0 20 Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 2 4 8 6 3. 8. 48kg 51kg Mass, ? (kg) 1 < ? 21 21 < ? 41 41 < ? 61 61 < ? 66 66 < ? 81 Frequency 6 8 0 5 15 Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 6 8 4 2 4. 9. 32kg 51kg Mass, ? (kg) 0 < ? 20 20 < ? 40 40 < ? 60 60 < ? 80 Frequency 6 8 4 20 Mass, ? (kg) 1 < ? 21 21 < ? 41 41 < ? 81 Frequency 6 8 20 5. 10. 50kg 45.11 kg
