Friday, April 15, 2011

Data Handling (Mean from Frequency Table)

How to calculate Mean from Frequency Table

A. The process
Refer to the following link for information on the process.

B. Notation 



B. Question:
Please post your answer to the following question. Show your working clearly.


source: http://www.mathsisfun.com

17 comments:

  1. No. of Parking Spaces = (15x1)+(27x2)+(8x3)+(5x4) =113
    Sum of Frequency = 15+27+8+5=55

    Mean= 113/55≈2.05

    ReplyDelete
  2. One parking space has a frequency of 15 so 15x1=15
    So 2x27=54, 3x8=24 4x5=20
    Total Parking Spaces=113
    Sum of all the frequency: 15+27+8+5=55
    Mean=113/55=2.05

    ReplyDelete
  3. Number of parking spaces= 1x15+2x27+3x8+4x5=113
    The frequency =15+27+8+5=55
    mean=113/55=2.05

    ReplyDelete
  4. Mean=
    Frequency/number of parking lots=
    (1x15)+(2x27)+(3x8)+(4x5)/(15+27+8+5)

    So the mean is--> 113/55=2.054 (dots above 5 and 4)

    ReplyDelete
  5. Number of parking spaces:
    (1x15)+(2x27)+(3x8)+(4+5)
    =113
    The frequency of the number of parking spaces:
    15+27+8+5
    =55
    The mean:
    113/55
    =2.05

    So the mean is 2.05.

    ReplyDelete
  6. no of parking spaces(total):(1*15)+(27*2)+(3*8)+(4*5)÷total frequency(15+27+8+5)
    =113÷55approximately 2.05

    ReplyDelete
  7. Parking spaces= 15(1)+27(2)+8(3)+5(4)=113
    Frequency= 15+27+8+5=55
    Parking spaces/ Frequency = 113/55= 2.05
    Mean=2.05

    ReplyDelete
  8. (15x1)+(27x2)+(8x3)+(5x4) =113
    Sum of Frequency = 15+27+8+5=55

    Mean= 113/55≈2.05

    ReplyDelete
  9. 1x15+2x27+3x8+4x5=113
    15+27+8+5=56
    113÷56=2.05

    ReplyDelete
  10. Total- 15x1+27x2+8x3+5x4
    =113
    Frequency-15+27+8+5
    =55
    Mean-113/55
    approximate=2.05

    ReplyDelete
  11. Number of parking spaces:
    (1x15)+(2x27) +(3x8)+(4x5)=113

    The mean:

    113/(15+27+8+5)=2.05...

    Ans:2.05

    ReplyDelete
  12. No.of parking space=1(15)+2(27)+3(8)+4(5)=15+54+24+20=98+15=113
    113/15+27+8+5=113/55≈2


    So the mean is 2

    ReplyDelete
  13. Total Number of parking spaces: 15(1) + 27(2) + 8(3) + 5(4) = 113
    Frequency: 15+ 27 + 8 + 5 = 55
    Mean: 113/55 = 2.05

    ReplyDelete
  14. No of parking spaces=(1x15)+(2x27)+(3x8)+(4x5)
    =113
    The frequency of the number of parking spaces:15+27+8+5=55
    The mean:No of parking spaces/The frequency of the number of parking spaces=113/55=2.05.
    2.05 average is 2

    ReplyDelete
  15. Number of parking spaces:
    (1x15)+(2x27)+(3x8)+(4x5)
    =113
    The frequency of the total number of parking spaces
    = 15+27+8+5
    = 55

    The mean:
    113/55 =(estimated) 2.05

    ReplyDelete
  16. Number of parking spaces = 1(15)+2(27)+3(8)+4(5)
    = 113
    Frequency = 15 + 27 + 8 + 5 = 55
    mean = 113 / 55
    = 2.05

    ReplyDelete
  17. Number of parking Space:15(1)+27(2)+8(3)+5(4)=113
    Number of frequency: 15+27+8+5=55
    Mean:113/55=2.05

    ReplyDelete