CBSE Class 11 Mathematics Statistics Notes
XI: Math Chapter 15: Statistics Chapter Notes Key Concepts 1. Statistics deals with collection presentation, analysis and interpretation ofthe data. 2. Data can be either ungrouped or grouped. Further, grouped data could becategorized into: (a)…
NCERT Class 11 Statistics Use of Statistical Tools
USE OF STATISTICAL TOOLS 123 of your objective, you will proceed with the collection and processing of the data. For example, production or sale of a product like car, mobile phone, shoe polish, bathing soap or a detergent, may be an area of interest to you. You may like to…
NCERT Class 11 Statistics Table Of Two Digit Random Numbers
Please refer to attached file for NCERT Class 11 Statistics Table Of Two-Digit Random Numbers
NCERT Class 11 Statistics Presentation of Data
EXERCISES Answer the following questions, 1 to 10, choosing the correct answer 1. Bar diagram is a (i) one-dimensional diagram (ii) two-dimensional diagram (iii) diagram with no dimension (iv) none of the above 2. Data represented through a histogram can help in finding…
NCERT Class 11 Statistics Organisation of Data
EXERCISES 1. Which of the following alternatives is true? (i) The class midpoint is equal to: (a) The average of the upper class limit and the lower class limit. (b) The product of upper class limit and the lower class limit. (c) The ratio of the upper class limit and the…
NCERT Class 11 Statistics Measures of Dispersion
EXERCISES 1. A measure of dispersion is a good supplement to the central value in understanding a frequency distribution. Comment. 2. Which measure of dispersion is the best and how? 3. Some measures of dispersion depend upon the spread of values whereas some calculate the…
NCERT Class 11 Statistics Measures of Central Tendency
EXERCISES 1. Which average would be suitable in the following cases? (i) Average size of readymade garments. (ii) Average intelligence of students in a class. (iii) Average production in a factory per shift. (iv) Average wages in an industrial concern. (v) When the sum of…
NCERT Class 11 Statistics Introduction
EXERCISES 1. Mark the following statements as true or false. (i) Statistics can only deal with quantitative data. (ii) Statistics solves economic problems. (iii) Statistics is of no use to Economics without data. 2. Make a list of activities that constitute the ordinary…
NCERT Class 11 Statistics Index Numbers
EXERCISES 1. An index number which accounts for the relative importance of the items is known as (i) weighted index (ii) simple aggregative index (iii) simple average of relatives 2. In most of the weighted index numbers the weight pertains to (i) base year (ii) current year (…
NCERT Class 11 Statistics Glossary Of Statistical Terms
The Association of South-East Asian Nations (ASEAN) : It is a political,economic, and cultural organisation of countries located in South-eastAsia—Thailand, Indonesia, Malaysia, Singapore, the Philippines, BruneiDarussalam, Cambodia, Laos, Myanmar and Vietnam. Balance of…
NCERT Class 11 Statistics Correlation
EXERCISES 1. The unit of correlation coefficient between height in feet and weight in kgs is (i) kg/feet (ii) percentage (iii) non-existent 2. The range of simple correlation coefficient is (i) 0 to infinity (ii) minus one to plus one (iii) minus infinity to infinity 3. If rxy…
NCERT Class 11 Statistics Collection of Data
Collection of Data chapter, you will study the sources of data and the mode of data collection. The purpose of collection of data is to collect evidence for reaching a sound and clear solution to a problem.In economics, you often come across a statement like, “After many…