Chapter Exam

Chapter-7 Statistics — Online MCQ Test

Q: What is the measure of central tendency that is obtained by adding all observations and dividing by the number of observations?

Answer: C. Mean — The mean is calculated by dividing the sum of all observations by the number of observations.

Q: Which of the following is the middle value of an arranged data set?

Answer: B. Median — The median is the middle value when the data are arranged in ascending or descending order.

Q: The ages of 5 students are 12, 13, 12, 14, 11. What is the mean age?

Answer: C. 12.4 — Mean = (12 + 13 + 12 + 14 + 11) ÷ 5 = 62 ÷ 5 = 12.4.

Q: A bar graph uses a scale of 1 unit = 5 students. If a bar has height 6 units, how many students does it represent?

Answer: C. 30 — Since 1 unit represents 5 students, 6 units represent 6 × 5 = 30 students.

Q: The mean of 5 numbers is 14. Four of the numbers are 12, 15, 13, and 16. What is the fifth number?

Answer: B. 14 — Total of 5 numbers = 14 × 5 = 70. Sum of given 4 numbers = 56, so the fifth number = 70 - 56 = 14.

MATHS · Samacheer Kalvi 8th · Tamil Nadu State Board

Practice Chapter-7 Statistics with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 8th MATHS. This chapter covers: mean median mode graphs Covers collection tabulation and graphical representation of data. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-7 Statistics — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 8th MATHS — Chapter-7 Statistics, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is the measure of central tendency that is obtained by adding all observations and dividing by the number of observations?