STATISTICS CLASS 11 NCERT SOLUTIONS PDF
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wise solutions. Download Class 11 Economics NCERT Solutions in pdf free NCERT Solution Class 11 Statistics Measures of Central Tendency · NCERT. These NCERT Solutions for Class 11 of Maths subject includes detailed answers of all the questions in Chapter 15 – Statistics provided in NCERT Book which is. NCERT Solutions Class 11 Statistics Economics PDF Download Class 11 Statistics for Economics Solutions of NCERT for Chapter 1 Introduction, Chapter 2.
Question 5. Question 7. Question 9.
Income per day Number 4 8 9 10 7 5 4 3 of persons Question Height in cms Number of 9 13 26 30 12 10 boys Question Find the mean deviation about median for the following data : Marks Number of 6 8 14 16 4 2 Girls Question Calculate the mean deviation about median age for the age distribution of persons given below: Age Number 5 6 12 14 26 12 16 9 EXERCISE After identifying the causes of the problem, it becomes easier to formulate policies to tackle it. When economic facts are stated in statistical terms or in form of data, they become more exact and more convincing than vague statement hence we can say that statistics is of no use to economics without data.
Question 2. Make a list of activities you find in a bus stand or a market place. How many of them are economic activities? Above mentioned all activities are economic activities because they all are undertaken for a monetary gain.
All these activities involve the use of scarce resources to carry out the task of production, consumption, and distribution. Question 3.
Statistical data and tools are used in predictions of future trends. Hence, statistical data is of key importance to the government and policy makers in formulating suitable policies of economic development. To carry on such an exercise economic planner needs to acquire a proper knowledge of statistics and appropriate statistical data.
Other examples: Ministry of Finance requires statistical data of revenue and expenditure to prepare the annual budget of the country. Banking organizations also need statistical data for fixing interest rates, advancement of loans and formation of credit policy.
Question 4. In lesson on statistics, students will be introduced to three measures of central tendency i.
NCERT Books Free Download for Class 11 Maths Chapter 15 - Statistics
Historical Facts! Karl Pearson, British statistician, is a leading founder of modern field of statistics. He established the discipline of mathematical statistics. In , Pierre de Laplace established many fundamental result in statistics.
NCERT solutions for class 11 Mathematics
Sharadchandra Shankar Shrikhande born on October 19, is an Indian mathematician with distinguished and well recognized achievements in combinatorial mathematics.You'll enjoy learning to solve the complex number of problems in both the Argand Plane and Polar Representation.
First n natural numbers Question 3.
Sometimes, we are required to describe the data arithmetically, like describing mean age of a class of students, mean height of a group of students, median score or model shoe size of a group. Lack of knowledge or inculcation of adverse opinions may lead to misuse of statistical facts.
Banking organizations also need statistical data for fixing interest rates, advancement of loans and formation of credit policy. Find the mean, variance and standard deviation using short-cut method Height in cms No.
Marks Group A 9 17 32 33 40 10 9 Group B 10 20 30 25 43 15 7.
Students must practice from the given video tutorials regularly to score good marks in the 11th board exam. Adding a column corresponding to cumulative frequencies of the given data, we obtain the following table.
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