Mathematics Project On Data Handling • Acknowledgement All the points shoud be there:- 1. Define Data 2. Types of data 3. Difference between raw data and arrayed data 4. Take some data by your own and arrange them in table like: Marks, Tally marks, Frequency 5. Define mean. Take some data from anywhere and find the mean of it 6. Define mode and median. Write the formulae for median 7. Present a bar graph for a student who got the following marks in the subjects: •Lang- 65 •Lit- 85 •H/B- 45 •Math- 90 •Geo- 85 •Hist- 55 -----*----- •Project should be done on a file copy and the file should be covered. •Name, class, sec,roll no., Year all the details should be there. For any queries please contact your respective teachers.

Answers 1

Define the terms:

(i) Data

(ii) Raw data

(iii) Array

(iv) Tabulation of data

(v) Observation

(vi) Frequency of an observation

(vii) Statistics

Answer:

(i) Definition:-

A collection of numerical figures giving some particular type of information is called data.

(ii) Definition:-

Data obtained in the original form is called raw data.

(iii) Definition:-

Arranging the numerical figures of a data in ascending or descending order is called an array.

(iv) Definition:-

Arranging the data in a systematic form in the form of a table is called tabulation of data.

(v) Definition:-

Each numerical figure in a data is called an observation.

(vi) Definition:-

The number of times a particular observation occurs is called its frequency.

(vii) Definition:-

It is the subject that deals with the collection, presentation, analysis and interpretation of numerical data.