statistical treatment of experimental data

Overview of methods of data collection: Census Sample survey Experiment Observational study Planning and conducting surveys: Characteristics of a well-designed and well-conducted survey Populations, samples, and random selection Sources of bias in sampling and sur..

Constructing and interpreting graphical displays of distributions of univariate data: Dotplot, stemplot, histogram, cumulative frequency plot Center and spread Clusters and gaps Outliners and other unusual features Shape Summarizing distributions of univariate d..

Tabulation of Data - Consider Standard IX of a school. There are four divisions in this class. Standard IX-A has 10 girls and 12 boys. Standard IX-B has 6 girls and 20 boys. Standard IX-C has 18 girls and 12 boys. Standard IX-D has 16 girls and 24 boys. This data can be represen..

Consider Standard IX of a school. There are four divisions in this class. Standard IX-A has 10 girls and 12 boys. Standard IX-B has 6 girls and 20 boys. Standard IX-C has 18 girls and 12 boys. Standard IX-D has 16 girls and 24 boy..

Most people show lack of interest or have no time to go through facts and figures given in a daily newspaper or a magazine. But if these figures are graphically presented, they become easier to grasp and catch the eye and have a more lasting effect on the reader's mind. The graphical representation..

Introduction - Facts and figures as such do not catch our attention unless they are presented in an interesting way. Graphical representation of data is one of the most commonly used modes of presentation. The different types of graphs that we are going to study are 1. Bar graphs 2. Pie c..

There are three methods to find mean for a frequency distribution. (i) Direct method: where x is the mid-interval f is the frequency M is the mean (ii) Short-cut method: where A = assumed mean d = x - A (iii) Step-deviation method: where i = class size We illustrate each of these methods w..

The collection of data, its classification, tabulation and study is called Statistics..

The collection of data, its classification, tabulation and study is called Statistics. Consider the marks obtained (out of 20) in the inter-school talent contest by the students of a school. Jasmine 18 Chandresh 18 Phiroza 17 Darvish 19 Sarabjit 19 Gaurav 15 Sejal 17 Sajid 16 Po..

deals mainly in communicating facts and figures in terms of a method called statistical method. Collection, classification, tabulation, representation, reasoning, testing and drawing inferences are part of statistical methods. Rainfall patterns of a particular city over a peri..