

DATA HANDLING
Presentation
•
English, Computers, Mathematics
•
7th Grade
•
Hard
Ishika Ralhan
Used 70+ times
FREE Resource
9 Slides • 1 Question
1
DATA HANDLING
MATHS

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DATA HANDLING
Data handling refers to the process of gathering, recording and presenting information in a way that is helpful to others - for instance, in graphs or charts. Data handling is also sometimes known as statistics and you will often come across it in the study of both Maths and Science.
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RAW DATA
Raw data, also known as primary data, are data (e.g., numbers, instrument readings, figures, etc.) collected from a source. In the context of examinations, the raw data might be described as a raw score.
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STATISTICS
Statistics is a branch of applied mathematics that involves the collection, description, analysis, and inference of conclusions from quantitative data. The mathematical theories behind statistics rely heavily on differential and integral calculus, linear algebra, and probability theory. Statisticians, people who do statistics, are particularly concerned with determining how to draw reliable conclusions about large groups and general phenomena from the observable characteristics of small samples that represent only a small portion of the large group or a limited number of instances of a general phenomenon.
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IN SIMPLE WORDS IF WE SAY STATISTICS IS A
A branch of mathematics dealing with the collection, analysis, interpretation, and presentation of masses of numerical data or a collection of quantitative data.
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RANGE
THE DIFFERENCE BETWEEN THE HIGHEST AND LOWEST OBSERVATIONS GIVES US AN IDEA OF THE SPREAD OF OBSERVATIONS . THIS CAN BE FOUND BY SUBTRACTING THE LOWEST OBSERVATIONS FROM THE HIGHEST OBSERVATIONS .
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MODE
The mode of a data set is basically the number which takes place most commonly in the set. To find the mode in an easy manner, you must arrange the numbers in order from least to greatest. Then, we must count how many times is each number is occurring. Finally, the number that will occur the most will be your mode.
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EXAMPLE OF MODE
13 , 44 , 88 ,43 ,13 ,33 , 0 , 44 , 13 , 67 , 98 , 13 ,55 ,13
THE MODE IS 13 BECAUSE IT IS OCCURING MOST
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MEAN
THE MOST REPRESENTATIVE VALUE OF A GROUP OF DATA IS THE MEAN he mean is the usual average, so I'll add and then divide:
(13 + 18 + 13 + 14 + 13 + 16 + 14 + 21 + 13) ÷ 9 = 15
Note that the mean, in this case, isn't a value from the original list. This is a common result. You should not assume that your mean will be one of your original numbers
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Multiple Choice
A batsman scored the following number of runs in six innings:
35, 30, 45, 65, 39, 20
The mean runs scored by him in an inning is
39
38
37
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DATA HANDLING
MATHS

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