Chapter Exam

Chapter 13: Statistical Techniques — Online MCQ Test

Q: Which statistical measure is also called the arithmetic mean?

Answer: C. Average — Arithmetic mean is the same as average. It is obtained by dividing the sum of all values by the number of values.

Q: Which of the following is a measure of dispersion?

Answer: C. Standard deviation — Standard deviation shows how far values are spread from the mean. It is a common measure of dispersion.

Q: If the values in a data set are arranged in ascending order, which measure is the middle value?

Answer: B. Median — Median is the central value in an ordered data set. It divides the data into two equal halves.

GEOGRAPHY · CLASS 12th · Tamil Nadu State Board

Practice Chapter 13: Statistical Techniques with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 12th GEOGRAPHY. This chapter covers: The final chapter details statistical methods used in geographical analysis. Students learn measures of central tendency dispersion correlation analysis and spatial data interpreta.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 13: Statistical Techniques — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 12th GEOGRAPHY — Chapter 13: Statistical Techniques, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which statistical measure is also called the arithmetic mean?

A. Median
B. Mode
C. Average ✓
D. Range

Answer: C. Average
Arithmetic mean is the same as average. It is obtained by dividing the sum of all values by the number of values.

Which of the following is a measure of dispersion?

A. Mean
B. Median
C. Standard deviation ✓
D. Correlation

Answer: C. Standard deviation
Standard deviation shows how far values are spread from the mean. It is a common measure of dispersion.

If the values in a data set are arranged in ascending order, which measure is the middle value?

A. Mean
B. Median ✓
C. Mode
D. Standard deviation

Answer: B. Median
Median is the central value in an ordered data set. It divides the data into two equal halves.

Two districts have the same mean annual rainfall, but District A has a much higher standard deviation than District B. What does this imply?

A. District A has more uniform rainfall than District B
B. District B has more variation in rainfall than District A
C. District A has greater variation in rainfall than District B ✓
D. Both districts have identical rainfall distribution

Answer: C. District A has greater variation in rainfall than District B
A higher standard deviation means greater dispersion around the mean. So District A's rainfall is less uniform and more variable.

A data set has values 8, 10, 10, 12, 15. Which of the following is true?

A. Mean, median, and mode are all equal
B. Median and mode are equal, but mean is different ✓
C. Mode is 12
D. There is no mode

Answer: B. Median and mode are equal, but mean is different
The median is 10 and the mode is also 10, while the mean is 11. This shows how central tendency measures can differ in the same data set.