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Statistic Form 2

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  • 1.
    • STATISTIC
    • A branch of Mathematics
    • A study about data including collecting ,recording
    • organizing, presenting, analyzing and interpreting it.
    • Help people in planning and making decision
  • 2.
    • Data
    • Data is a collection of information or facts
    • Example: Height of 1 AKIK
    • Weight of 2 DELIMA
    • Number of students in each class
    • Population of Malaysia
    • through 1990-2000
    • Data can be collected by:
    • Counting
    • Measuring
  • 3.
    • COLLECTING DATA
    • The following data shows the height of 30 students in
    • 3 Mawar measured in the nearest cm.
    • 164 16 1 164 160 164 16 1 162 163 162 160
    • 160 164 163 162 163 162 160 162 164 164
    • 16 1 162 164 162 162 162 163 160 163 163
    • Is this the most efficient way of displaying data?
    • How do we record the data more systematically?
    • USE FREQUENCY TABLE
  • 4. FREQUENCY
  • 5. Frequency Table 1 f 2 e 3 d 2 c 3 b 2 a Frequency Letters
  • 6.
    • What is the highest frequency?
    • What is the lowest frequency ?
    • Which height has the highest frequency?
    • Which height has the lowest frequency?
    • What is the different between the
    • highest frequency and the lowest
    • frequency
    7 //// // 164 6 //// // 163 9 //// /// 162 3 /// 161 5 //// 160 Frequency Tally Height
  • 7. Vertical Frequency Table Horizontal Frequency Table Notice that: Total of frequency is the same as the data in the set. 7 164 30 Total 5 163 9 162 3 161 6 160 Frequency Height 7 5 9 3 6 Frequency 164 163 162 161 160 Height
  • 8. Vertical frequency table Horizontal frequency table Voting for the monitor 1 9 2 6 3 Frequency Sulaiman Yusoff Yasmin Ibrahim Safura Candidates 1 Sulaiman 9 Yusoff 2 Yasmin 6 Ibrahim 3 Safura Frequency Candidates
  • 9. RECORDING DATA ORGANIZING DATA REPRESENTING DATA
  • 10. REPRESENTING DATA
  • 11. PICTOGRAM BAR CHART LINE GRAPH
  • 12. PICTOGRAM? Data representation in graphical form What is
  • 13.
    • Decide on the appropriate symbol to be used:
    • - SinceThe data is related with the number of pupils,. Therefore we can use the symbol as shown .
    • 2.Then decide on how many pupil does this symbol represent. (scaling)
    Steps: How can we represent this data In graphical form? 2B: 30 =7 1 faces 4 2
  • 14. Horizontal Pictogram
  • 15. What is the total number of students in form 2?
  • 16. Vertical Pictogram
  • 17.
    • REMINDER:
    • A pictogram must have a
    • title
    • -The title tell us what the
    • table is all about.
    • Legend to show
    • value represented by
    • one symbol
    • Use suitable symbol
  • 18. represent 5 apples represent 4 pears Sales of Fruits on Particular Day 24 5 C 16 25 B 0 30 A Pear Apple Stall Stall C Stall B Stall A
  • 19. represent 5 apples represent 4 pears Sales of Fruits on A Particular Day Stall C Stall B Stall A
  • 20. BAR CHART HORIZONTAL BAR CHART VERTICAL BAR CHART
    • A bar chart is a way of
    • representing the frequencies of data
    • obtained by counting
    • It displays a data using
    • a numbers of bar with the
    • same width.
    • Each bar represent different categories
    • The height of the bars
    • represent the frequencies.
    • Bar chart can be
    • represented horizontally or
    • Vertically
  • 21. To construct a bar chart
  • 22.
    • To construct bar chart
    • We need to:
    • Write the title of the chart
    • Label the axes
    • Determine the scales for
    • the axes
    • 4.Draw the bars
    Vertical bar chart
  • 23. Horizontal bar chart
  • 24. PROBLEM SOLVING INVOLVING BAR CHART
  • 25.  
  • 26. MISLEADING
  • 27.  
  • 28. BAR CHART WHICH CONTAINS 2 SETS OF DATA (DUAL BAR CHART)
  • 29. The table shows the Yearly enrolment of SMK Baru from 2001- 2003.Construct a dual bar chart to display the Data . 600 700 2003 400 600 2002 500 650 2001 Boys Girls Year
  • 30. Construct a dual bar chart to show the sales of the burgers 300 300 March 300 400 Feb 300 500 Jan Fish Chicken Month
  • 31. LINE GRAPH Line graph is always used to represent the data over a period of time . For instance hours, weeks, months or years
  • 32. A way of representing a set of data over a period of time 100 August 50 July 70 Jun 60 May 50 April 40 March 70 February Mark Month
  • 33.  
  • 34.  
  • 35.  
  • 36.
    • Determine the suitable scale for the vertical
    • axis
    • 2. Draw the axes and name them and
    • mark the value on it
    • 3. Mark the horizontal axis
    • 4. Plot the points
    • 5. Draw the graph by joining the adjacent points
    • with straight line
    • 6. Give the graph a title
    • REMINDER: The vertical axis always represent quantity
    • while the horizontal axis always represent
    • period/time.
    To construct line graph
  • 37. REFER TO LESSON 110 LINE GRAPH (NO 4 )
  • 38.