Chapter Exam

Chapter 12 MATHS : Statistics — Online MCQ Test

Q: What is the range of the data: 15, 20, 25, 30, 35?

Answer: B. 20 — Range is calculated as Maximum value - Minimum value. 35 - 15 = 20.

Q: The number of times a particular observation occurs in a data set is called its:

Answer: B. Frequency — Frequency is defined as the number of times a specific value appears in the collection of data.

Q: If the class marks of a distribution are 12, 17, 22, 27, what is the class size?

Answer: B. 5 — The class size is the difference between two consecutive class marks: 17 - 12 = 5.

Q: A frequency polygon can be drawn by joining the midpoints of the tops of the rectangles of a:

Answer: B. Histogram — A frequency polygon is constructed by plotting the class marks against frequencies and joining them, which corresponds to the midpoints of histogram bars.

Q: If the mean of 6, 8, 5, 7, x, 4 is 7, find the value of x.

Answer: B. 12 — (6+8+5+7+x+4)/6 = 7 => 30+x = 42 => x = 12.

MATHS · CLASS 9th · Andhra State Board

Practice Chapter 12 MATHS : Statistics with a free chapter-wise online MCQ test for Andhra State Board CLASS 9th MATHS. This chapter covers: The final chapter details data collection graphical representations histograms frequency polygons and statistical interpretations.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 12 MATHS : Statistics — Important Questions & Answers (FAQ)

Frequently asked questions from Andhra State Board CLASS 9th MATHS — Chapter 12 MATHS : Statistics, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is the range of the data: 15, 20, 25, 30, 35?

A. 15
B. 20 ✓
C. 25
D. 35

Answer: B. 20
Range is calculated as Maximum value - Minimum value. 35 - 15 = 20.

The number of times a particular observation occurs in a data set is called its:

A. Range
B. Frequency ✓
C. Class interval
D. Cumulative frequency

Answer: B. Frequency
Frequency is defined as the number of times a specific value appears in the collection of data.

If the class marks of a distribution are 12, 17, 22, 27, what is the class size?

A. 2
B. 5 ✓
C. 10
D. 15

Answer: B. 5
The class size is the difference between two consecutive class marks: 17 - 12 = 5.

A frequency polygon can be drawn by joining the midpoints of the tops of the rectangles of a:

A. Bar graph
B. Histogram ✓
C. Pie chart
D. Frequency table

Answer: B. Histogram
A frequency polygon is constructed by plotting the class marks against frequencies and joining them, which corresponds to the midpoints of histogram bars.

If the mean of 6, 8, 5, 7, x, 4 is 7, find the value of x.