tanveer data handling
TRANSCRIPT
DATA HANDLINGCLASS VI
PREPARED BY TANVEER AHMED
T.G.T.(MATHS)K.V. SECT-25 ROHINI,
DELHI
DATALet us take an example of a class which is preparing to go for a picnic. The teacher asked the students to give their choice of fruits out of
Let us take an example of a class which is preparing to go for a picnic. The teacher asked the students to give their choice of fruits out of banana
Let us take an example of a class which is preparing to go for a picnic. The teacher asked the students to give their choice of fruits out of banana apple
Let us take an example of a class which is preparing to go for a picnic. The teacher asked the students to give their choice of fruits out of banana
apple orange
Let us take an example of a class which is preparing to go for a picnic. The teacher asked the students to give their choice of fruits out of banana apple orange or guava
Uma is asked to prepare the list. She prepared a list of all the children and wrote the choice of fruit against each name. This list would help the teacher to distribute fruits according to the choice
Raghav — Banana Bhawana — ApplePreeti — Apple Manoj — BananaAmar — Guava Donald — AppleFatima — Orange Maria — BananaAmita — Apple Uma — OrangeRaman — Banana Akhtar — GuavaRadha — Orange Ritu — AppleFarida — Guava Salma — BananaAnuradha -Banana Kavita — Guava Rati — Banana Javed — Banana
Similarly, in your day to day life, you must have seen several kinds of tables consisting of numbers, figures, names etc.1.The heights of the students of your class.
Similarly, in your day to day life, you must have seen several kinds of tables consisting of numbers, figures, names etc.1.The heights of the students of your class.2.Records of marks of all the students .
Similarly, in your day to day life, you must have seen several kinds of tables consisting of numbers, figures, names etc.1.The heights of the students of your class.2.Records of marks of all the students 3.The score of the player in the game.These tables provide data.
A data is a collection of facts, figures or numbers gathered to give some information.
There are two types of data:-(a)Primary data:-when the
information are collected by the investigator herself or himself, the data obtained is called primary data.
(b)secondary data:-when the information are gathered from a source which already had the information stored ,the data obtained is called secondary data.
Organisation of dataChoic
e Tally
marksNumbe
r of studen
tsIIIIII
Organisation of dataChoice Tally marks Number
of students
IIII III 8IIII 5III 3IIII 4
TOTAL 20
PICTOGRAPHA pictograph
represents data through pictures of
object . It helps answer the questions
on the data at a glance
Fruits Number of students = 1 student
*Which fruits is most liked by the students?*Which fruits is least liked by the students?* How many students are there in the class?
(a) On which months were the least number of cars sold?(b) On which months were the maximum number of cars sold?(c)Find out the approximate number of cars sold in the four months?
Months
Number of cars 10 car
JanuaryFebruaryMarchApril
Making Pictograms
Red 50Black 35Green 15Silver 20Blue 45Yellow 10
This table shows the colour of cars in a car park. Make a pictogram.
Look at the numbers.Choose the best unit.
1 picture = cars10
The colour of carsRed 50Black 35Green 15Silver 20Blue 45Yellow 10
Key:1 picture = cars10
50 ÷ 10 = 5
Red
Black
Green
Silver
Blue
Yellow
The colour of carsRed 50Black 35Green 15Silver 20Blue 45Yellow 10
35 ÷ 10 = 3½
Red
Black
Green
Silver
Blue
Yellow
Key:1 picture = cars10
The colour of carsRed 50Black 35Green 15Silver 20Blue 45Yellow 10
15 ÷ 10 = 1½
Red
Black
Green
Silver
Blue
Yellow
Key:1 picture = cars10
Red 50Black 35Green 15Silver 20Blue 45Yellow 10
45 ÷ 10 = 4½
Red
Black
Green
Silver
Blue
Yellow
Key:1 picture = cars10
The colour of cars
The colour of carsRed 50Black 35Green 15Silver 20Blue 45Yellow 10
10 ÷ 10 = 1
Red
Black
Green
Silver
Blue
Yellow
Key:1 picture = cars10
The colour of carsRed
Black
Green
Silver
Blue
Yellow
Key:1 picture = cars10
What is the least popular car colour in the car park?
BAR GRAPH Representing data by pictograph is not only
time consuming but at times difficult too. Let us see some other way of representing data visually.
Bars of uniform width can be drawn horizontally or vertically with equal spacing between them and then the length of each bar represents the given number. Such method of representing data is called a bar diagram or a bar graph.
Look at the way a bar chart is constructed. Can you name its different parts?
What is this called?
What do we call this?
What is this?
Horizontal axis (x). Always labelled.
Vertical axis (y). Always labelled and numbered.
A bar chart always has a
title.The height of the bars show how many of something was scored/recorded.
Can you read the answers?
Flavours
Num
ber
of c
hild
ren
Favourite Crisps
Salt and vinegar
Cheese and onion
Prawn cocktail
Ready salted
Bacon Worcester sauce
Barbeque
What does this bar chart show?How many children were surveyed?Which is the favourite flavour?Which is the least liked?What intervals are used on the y axis?What intervals could you use if twice as many children were surveyed?
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THANKS