## BASIC STATISTICS

Basic statistics :

It is the part of statistics which is considered to be a branch of math concerned with collecting and interpreting data.

It is the study of collection, arrangement and interpretation of data. It deals with all aspects, including planning of data collection in terms of the surveys and experiments.

Graphs, charts, averages, probability and its distributions etc., are topic dealt under stat.

When we go through the ancient period's history or medieval period , we would be able to find out statistics' mention in most of the countries

The are some limitations for stat.

Only under a specific set of conditions, the projection of production, price of a commodity and sales for future is possible. In case the rules for random sampling are not followed properly, The decision which we make based on those samples will never be correct.

Suppose, the management of a company does not follow the rules of random sampling, the future projection made by the management of the company will go wrong. The company may have to face huge loss.

Some basic things in Statistics are:

1. Data Collection

(In which we have two types. They are

(i) Primary data collection and

(ii) Secondary data collection)

2. Data Presentation.

In primary data collection , the data is collected in 4 ways. They are

(i) Interview

(ii) Method if questionnaire

(iii) Observation

(iv) Enumerators fill questionnaires

Topics under this are:

1. Basic statistics-introduction

2.Representation of data

3.Measures of central tendency

4. Measures of Dispersion
• Measures of dispersion
• Range
• Quartile deviation
• Mean deviation
• Standard deviation
• Variance
• Skewness
5. Regression and Correlation
• Introduction
• Linear model
• Non linear model
• Scatter diagram
• Linear and non linear correlation
• Coefficient of correlation
• Curve fitting
• Linear regression
6. Probability
• Introduction to probability
• Experiment
• Sample space
• Event
• Relative frequency

In the above links, we have discussed topics under basic statistics. Students can go through the topics and practice the problems given in the corresponding pages. If you are having any doubt you can contact us through mail, we will help you to clear your doubts. After having gone through the stuff given above, we hope that the students would have understood "Basic of statistics"

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WORD PROBLEMS

Word problems on simple equations

Word problems on linear equations

Algebra word problems

Word problems on trains

Area and perimeter word problems

Word problems on direct variation and inverse variation

Word problems on unit price

Word problems on unit rate

Word problems on comparing rates

Converting customary units word problems

Converting metric units word problems

Word problems on simple interest

Word problems on compound interest

Word problems on types of angles

Complementary and supplementary angles word problems

Double facts word problems

Trigonometry word problems

Percentage word problems

Profit and loss word problems

Markup and markdown word problems

Decimal word problems

Word problems on fractions

Word problems on mixed fractrions

One step equation word problems

Linear inequalities word problems

Ratio and proportion word problems

Time and work word problems

Word problems on sets and venn diagrams

Word problems on ages

Pythagorean theorem word problems

Percent of a number word problems

Word problems on constant speed

Word problems on average speed

Word problems on sum of the angles of a triangle is 180 degree

OTHER TOPICS

Profit and loss shortcuts

Percentage shortcuts

Times table shortcuts

Time, speed and distance shortcuts

Ratio and proportion shortcuts

Domain and range of rational functions

Domain and range of rational functions with holes

Graphing rational functions

Graphing rational functions with holes

Converting repeating decimals in to fractions

Decimal representation of rational numbers

Finding square root using long division

L.C.M method to solve time and work problems

Translating the word problems in to algebraic expressions

Remainder when 2 power 256 is divided by 17

Remainder when 17 power 23 is divided by 16

Sum of all three digit numbers divisible by 6

Sum of all three digit numbers divisible by 7

Sum of all three digit numbers divisible by 8

Sum of all three digit numbers formed using 1, 3, 4

Sum of all three four digit numbers formed with non zero digits

Sum of all three four digit numbers formed using 0, 1, 2, 3

Sum of all three four digit numbers formed using 1, 2, 5, 6 