Chapter 13: Statistical Techniques — Online MCQ Test
GEOGRAPHY · CLASS 12th · Tamil Nadu State Board
Practice Chapter 13: Statistical Techniques with a free chapter-wise online MCQ test.
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....
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Chapter 13: Statistical Techniques — Important Questions & Answers
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.
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.
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.
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 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.
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.