May. 30, 2023•0 likes•11 views

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Presentations & Public Speaking

this is a math ppt on data handling

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- 1. BY BODHADITYA ACHARYA
- 2. Data handling is the way in which Data can be represented graphically to give a clear idea of whatit represents. It is easier to interpret and organize data using pictorial representation. Data handling includes bar graph, pictograph and tally marks.
- 3. It is the way of representing data visually. Bars areof uniform width and can be drawn horizontally or vertically with equal spacing between them. The length of each bar represents the given number frequency.
- 4. 1.Y-axis 2.X-axis 4.scale 3.bars
- 5. 1. Y-axis: The line on a graph that runs vertically (up-down)through zero. It is used as a reference line so you can measure fromit. 2. X-axis: The line on a graph that runs horizontally (left-right) through zero. It is used as a reference line so you canmeasure from it. 3. Bars: They can be horizontal or vertical. Bars of a bar graph are used to show how large each valueis. 4. Scale: A scale on a graph is what we use to measure the distance between the givencoordinates.
- 6. Sweets Sold on aMonday 16 14 12 10 8 6 4 2 0 Toffee Crisp Snickers Bounty Kitkat Mars Twix Sweets Number What is the most popularsweet bought on Mondays? Mars It is easy to answer this question from a graph. There is only one set of data onthis graph.
- 7. The representation of an information through pictures is called a pictograph. Pictographs use relative sizes or repetitions of the same icon, picture, or symbol to show comparison. Also called pictogram, pictorial chart, pictorial graph, or picturegraph.
- 8. Badgers Tigers Peacocks Elephants Pigs Spiders Represents two books Example of pictographs
- 9. A method of counting frequencies, according to some classification, in a set of data. For ease of counting, every fifth observation is represented by a diagonal line crossing the previous four to make a five-barred gate. Tally charts are often used with grouped observations
- 10. Solved questions- Reading Group Number of books Read Frequency Badgers 16 Tigers 14 Peacocks 23 Elephants 4 Pigs 2 Spiders 13
- 11. Key: picture =10people How many children walk to school? 65 (6 x 10)+5=
- 12. Ekta is asked to collect data for sizeof shoes of students in her Class VI. Her finding are recorded in the manner shown below : Ekta prepared a table using tally marks. 6 8 (i) the size of shoes worn by the maximumnumber of students. 6 (ii) the size of shoes worn by the minimum numberof students. 8
- 13. Read the adjoining bar graph showing the number of students in a particular class of aschool. a) What is the scale of thisgraph? b) How many new students are added everyyear? c) Is the number of students in the year 2003twice that in the year2000? =1 0 1unit length students 1unit length =10students 10 10students 30 60 yes