Class 12 Education Important Chapter 7 Elementary Educational Statistics

Class 12 Education Important Chapter 7 Elementary Educational Statistics Solutions English Medium As Per New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters ASSEB Class 12 Education Important Solutions in English Medium and select need one. AHSEC Class 12 Education Additional Notes English Medium Download PDF. HS 2nd Year Education Additional Solutions English Medium.

Class 12 Education Important Chapter 7 Elementary Educational Statistics

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. ASSEB Class 12 Education Additional Question Answer in English are part of All Subject Solutions. Here we have given HS 2nd Year Education Important Notes English Medium for All Chapters, You can practice these here.

Elementary Educational Statistics

Chapter: 7

IMPORTANT QUESTION AND ANSWER

Answer the Following Question:

1. What is statistics?

Ans: Statistics is the science of collecting, classifying, presenting, analyzing, and interpreting numerical data to draw conclusions.

2. Define statistics as per W.G. Sutcliffe.

Ans: According to W.G. Sutcliffe, “Statistics comprises the collection, tabulation, presentation, and analysis of aggregate facts collected in a methodical manner without bias and relates to predetermined purpose.”

3. State one definition of statistics by Croxton and Cowden.

Ans: According to Croxton and Cowden, “Statistics may be defined as the collection, presentation, analysis, and interpretation of numerical data.”

4. Write two uses of statistics in education.

Ans: (i) It helps in constructing educational and psychological tests.

(ii) It assists teachers in maintaining systematic records and predicting student performance.

5. What is frequency distribution?

Ans: Frequency distribution is the organization and grouping of raw data into classes or categories to simplify analysis and interpretation.

6. What is meant by tally marks?

Ans: Tally marks are symbols used to record and count frequencies within each class interval in a frequency distribution table.

7. What is range?

Ans: Range is a simple measure of variability, calculated as the difference between the highest and lowest scores in a data set.

8. Define midpoint.

Ans: A midpoint is the middle value of a class interval, found by adding the upper and lower limits of the interval and dividing the sum by two.

9. Name two graphical methods of data presentation.

Ans: (i) Histogram.

(ii) Frequency Polygon.

10. What is a histogram?

Ans: A histogram is a graphical representation of a frequency distribution using adjacent rectangles, where the area of each rectangle is proportional to the frequency of the corresponding class interval.

11. What is a frequency polygon?

Ans: A frequency polygon is a graph formed by plotting frequencies against midpoints of class intervals and connecting the points using straight lines.

12. Define Arithmetic Mean.

Ans: Arithmetic Mean is the sum of all observations divided by the total number of observations. It is the most commonly used average.

13. What is median?

Ans: Median is the middle value in an ordered data set, dividing the data into two equal halves.

14. What is mode?

Ans: Mode is the value that appears most frequently in a given data set.

15. Write the formula for range.

Ans: Range = Highest score – Lowest score.