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CONFIDENTIAL 1 FREQUENCY TABLES AND LINE GRAPHS. 2 FREQUENCY TABLES.

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Presentation on theme: "CONFIDENTIAL 1 FREQUENCY TABLES AND LINE GRAPHS. 2 FREQUENCY TABLES."— Presentation transcript:

1 CONFIDENTIAL 1 FREQUENCY TABLES AND LINE GRAPHS

2 2 FREQUENCY TABLES

3 3 Review Arrange the following numbers in ascending order: a) 145,140,150,149,142,147,141,146,151,148 Arrange the following numbers in descending order: a) 90,75,80,65,78,55,56, 77,86,68,74,79,91

4 CONFIDENTIAL 4 FREQUENCY TABLES A frequency table is a table that lists each item in a data set with the number of times the item occurs.

5 CONFIDENTIAL 5 Frequency tables We use tally marks to represent the number of repeated items. Tally mark is denoted by a vertical line For example: 3 = and 5 =

6 CONFIDENTIAL 6 Frequency tables square trianglecircle trianglesquare circle squareTriangles Shapes TallyNumber Triangle III 3 Square IIII 4 Circle II 2 The frequency table is:

7 CONFIDENTIAL 7 Frequency tables ShapesTallyfrequency CircleIIII 9 pentagonIIII 10 SquareIIII IIII I11 TriangleIIII 10 EXAMPLE: Total 40

8 CONFIDENTIAL 8 Now your turn!!! The salary of 24 people in my neighborhood (in $ thousands): Using tally marks, make a frequency distribution table.

9 CONFIDENTIAL 9 More Problems The following table shows the number of TVs sold by a shopkeeper during a week. Prepare a frequency table. Friday Thursday Wednesday Tuesday Monday

10 CONFIDENTIAL 10 LINE GRAPHS

11 CONFIDENTIAL 11 Line Graphs A line graph uses a series of line segment to show changes in data.

12 CONFIDENTIAL 12 Making a Line graph Temperatures through out the day TimeTemperature 8 A.M50 F 10 A.M60 F 12 P.M70 F 2 P.M80 F 4 P.M75 F 6 P.M60 F 8 P.M55 F TIME OF DAY 8 AM10AM12PM2 PM4 PM 8 PM6 PM TEMPERATURETEMPERATURE

13 CONFIDENTIAL 13 More Examples Convert the frequency table into a line graph: FruitNumbers Apple9 Orange4 Mango15 Pear13 Fruits AppleOrangeMangoPear NUMBERSNUMBERS

14 CONFIDENTIAL 14 Solve the puzzle puzzles/12-piece-jigsaw/ puppydog.html

15 CONFIDENTIAL 15 Time for a break!

16 CONFIDENTIAL 16 Now your turn SnackNumbers Sandwich15 Chips26 Samosa15 Cake7 Convert the given frequency table into line graph

17 CONFIDENTIAL 17 More practice problems Prepare a frequency table and then draw a line graph with this observations: 145, 150, 142, 144, 147, 150, 148,147,149,151, 149, 144, 150, 146,148,150,149,144, 151, 148,147,146, 151,149,150,140,146,147,150,151.

18 CONFIDENTIAL 18 Assignment The following table gives birth-days of 40 boys in a class. Illustrate the data by a line graph. DayssundaymondayTuesdayWednesdayThursdayFridaySaturday Numb er of boys

19 CONFIDENTIAL 19 Review A frequency table is a table that lists each item in a data set with the number of times that occurs. A line graph uses a series of line segments to show changes in data.

20 CONFIDENTIAL 20 Thats all for today!!! You did a good job!


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