Elements of Statistics
In this page Elements of Statistics we give the information about Introduction to statistics and related all points and simple notes and solved example.
Unit 1: Elements of Statistics
Introduction to Statistics
1.1. Meaning of Statistics 1.2. Primary and Secondary data, Qualitative and quantitative data
Discrete and continuous data, frequency, cumulative frequency, frequency distribution
1.3 Representation of data by graphs: Histogram, frequency polygon, frequency curve, Ogive curve.
Representation of Statistical data by diagram: Bar diagram and Pie chart.
Elements of Statistics
Unit 2: Descriptive Statistics
2.1 Measures of central Tendency: Meaning of averages, Requirements
of good average.
Arithmetic mean (A.M.), Combined mean
Median
Quartiles
Mode
Relation between mean, median and mode. Merits and Demerits of Mean, Median and Mode
determination of Median and Mode by Graph.
2.2 Measures of Dispersion: Meaning of dispersion, Absolute and Relative measures of dispersion
Q.D
M.D
S.D
Variance and Combined variance
Coefficient of Variation (C.V.)
Unit 3: Analysis of Bivariate data
3.1 Correlation: Concept of Correlation, Types of correlation
Scattered diagram
Karl Pearson’s Correlation Coefficient (r)
Spearman’s Rank Correlation Coefficient (R)
3.2 Regression: Concept of Regression, regression coefficients and
regression lines.
Properties of regression coefficients
Unit 4: Probability
4.1 Probability, addition law, multiplication law
4.2 Bayes’ theorem