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Chapter 1 ECONOMICS : Descriptive Statistics — Online MCQ Test

ECONOMICS · CLASS 12 INTER II YEAR · Andhra State Board

Practice Chapter 1 ECONOMICS : Descriptive Statistics with a free chapter-wise online MCQ test for Andhra State Board CLASS 12 INTER II YEAR ECONOMICS. This chapter covers: This chapter covers basic statistical tools data collection representation measures of central tendency arithmetic mean median and mode.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 1 ECONOMICS : Descriptive Statistics — Important Questions & Answers (FAQ)

Frequently asked questions from Andhra State Board CLASS 12 INTER II YEAR ECONOMICS — Chapter 1 ECONOMICS : Descriptive Statistics, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is defined as the sum of all observations divided by the number of observations?
  • A. Median
  • B. Arithmetic Mean ✓
  • C. Mode
  • D. Range
Answer: B. Arithmetic Mean
The arithmetic mean is calculated by summing all values and dividing by the total count of observations.
Data collected by the investigator for a specific purpose for the first time is known as ________.
  • A. Secondary data
  • B. Primary data ✓
  • C. Processed data
  • D. Sampled data
Answer: B. Primary data
Primary data is original data collected by the researcher for the first time.
If a data set has two values that appear with the highest frequency, the distribution is said to be ________.
  • A. Unimodal
  • B. Bimodal ✓
  • C. Multimodal
  • D. Symmetrical
Answer: B. Bimodal
A distribution with two modes is called bimodal.
In a distribution where mean = 20 and median = 20, the distribution is likely ________.
  • A. Positively skewed
  • B. Negatively skewed
  • C. Symmetrical ✓
  • D. Bimodal
Answer: C. Symmetrical
In a perfectly symmetrical distribution, the mean, median, and mode are identical.
What is the relationship between Mean, Median, and Mode in a moderately asymmetrical distribution?
  • A. Mode = 3 Median - 2 Mean ✓
  • B. Mean = 3 Median - 2 Mode
  • C. Median = 3 Mean - 2 Mode
  • D. Mode = 2 Median - 3 Mean
Answer: A. Mode = 3 Median - 2 Mean
According to Karl Pearson's empirical formula for moderately skewed distributions, Mode = 3 Median - 2 Mean.

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