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Lesson 10: Averages. Mathswatch 41/133

Lesson 10: Averages. Mathswatch 41/133. 1) Find the median and the range in the stem and leaf below. Describe fully the single transformation that maps A onto B. GCSE Maths Starter 10. Write 56 as a product of its prime factors. Simplify (y⁵)³ Solve 4(x + 7) = 36.

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Lesson 10: Averages. Mathswatch 41/133

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  1. Lesson 10: Averages.Mathswatch 41/133

  2. 1) Find the median and the range in the stem and leaf below. Describe fully the single transformation that maps A onto B. GCSE Maths Starter 10 Write 56 as a product of its prime factors. Simplify (y⁵)³ Solve 4(x + 7) = 36

  3. Lesson 10: Averages.Mathswatch 41/133 To calculate the mean, median, mode and range from a list of data. To estimate the median and modal group from grouped data. To estimate the mean from data in a table. EXTN: To solve problems involving mean from a table when the table isn’t drawn for you.(Grade C)

  4. Lesson 10: Averages.Mathswatch 41/133 Play this youtube clip: http://www.youtube.com/watch?v=zzDDUc_yP2I

  5. Lesson 10: Averages.Mathswatch 41/133 So… Most Common If we know: The Mode = Most Common What is the mode average of the following numbers? 2, 6, 4, 2, 5, 8, 7, 4, 2, 6, 3, 2, 2, 3

  6. Lesson 10: Averages.Mathswatch 41/133 So… Median = Middle • You need to put the numbers in order; from the lowest to the highest • And find the halfway point: 2, 6, 4, 2, 5, 8, 7, 4, 2, 6, 3, 2, 2, 3

  7. Lesson 10: Averages.Mathswatch 41/133 TheMean Think of a mean old man counting out his money! He adds all of the values together and divides the total by the number of values he has.

  8. Lesson 10: Averages.Mathswatch 41/133 So… calculation of the mean 56 14 = 4 • Add together the numbers: 2 + 6 + 4 + 2 + 5 + 8 + 7 + 4 + 2 + 6 + 3 + 2 + 2 + 3 = ? And divide by the total by the number of values you have

  9. Lesson 10: Averages.Mathswatch 41/133 The Range Answer: 8 – 2 = 6 • Take the highest value and subtract the lowest value: 2, 2, 2, 2, 2, 3, 3, 4, 4, 5, 6, 6, 7, 8

  10. For averages from a table Watch Mathswatch clip 133. Mathswatch Website Centre ID: bbs Login: burton Password: radius Lesson 10: Averages.Mathswatch 41/133

  11. Lesson 10: Averages.Mathswatch 41/133 One for You Often it tells you what to divide by in the first sentence MP MP x Freq 5 2 x 5 = 10 15 120 25 225 35 245 45 180 ÷ 30 = 26 30 780

  12. Lesson 10: Averages.Mathswatch 41/133 To calculate the mean, median, mode and range from a list of data. To estimate the median and modal group from grouped data. To estimate the mean from data in a table. EXTN: To solve problems involving mean from a table when the table isn’t drawn for you.(Grade C)

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