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Ex 14.2 NCERT Solutions - Statistics

Introduction:
NCERT Solutions for Exercise 14.2 of the Statistics textbook provide step-by-step answers to the questions mentioned in the exercise. These solutions help students understand the concepts and techniques involved in solving statistical problems.

Overview of Exercise 14.2:
Exercise 14.2 of NCERT Statistics textbook covers the topic of "Mean of Grouped Data." This exercise focuses on finding the mean of a given set of grouped data. The questions in this exercise involve finding the missing frequency or the assumed mean when the mean is given.

Key Concepts:
1. Grouped Data: Grouped data refers to data that is organized and presented in the form of frequency distribution or grouped frequency distribution.
2. Frequency: Frequency represents the number of times a particular observation occurs in a given dataset.
3. Mean: Mean is the average value of a dataset and is calculated by dividing the sum of all values by the total number of values.
4. Assumed Mean: Assumed mean is a value chosen as a reference point to calculate the mean of grouped data.
5. Missing Frequency: Missing frequency refers to the frequency of a particular observation that is not given in the dataset.

Steps to Solve the Exercise:
To solve the questions in Exercise 14.2, follow these steps:

1. Read the question carefully and understand the given information.
2. Identify the type of problem: finding the missing frequency or the assumed mean.
3. Apply the appropriate formula and method to find the solution.
4. Substitute the given values into the formula and solve the equation.
5. Verify the solution by checking if it satisfies the conditions mentioned in the question.
6. Write the final answer with proper units and rounding, if required.

Conclusion:
Exercise 14.2 of NCERT Statistics textbook provides practice in finding the mean of grouped data. By solving the questions in this exercise, students can enhance their understanding of statistical concepts and improve their problem-solving skills. It is recommended to refer to the NCERT Solutions for Exercise 14.2 to get a clear understanding of the steps involved in solving these problems.