This 9th class biology chapter 11 online test covers Chapter 11 of the Class 9 Biology course, Biostatistics. It has 25 multiple-choice questions, one on screen at a time, and it marks itself the moment you finish. There is no timer and no sign-up: answer the questions, press finish, and you get your score together with a review of every question, the correct option and a short explanation. An Urdu medium version of the same test is given further down the page.
What This Online Test Covers
The 25 questions are drawn from the whole of Chapter 11:
- Mean, median and mode — how to calculate each, what to do when the number of values is even, and what the mode is when nothing repeats.
- Worked data sets — student heights, fruit sales and species counts, exactly like the examples in your textbook.
- Bar charts — what the height of a bar represents, choosing a sensible scale, and how the bars should be drawn.
- Uses of biostatistics — infection and recovery rates, vaccine effectiveness, genetic markers for disease, and comparing crop yields.
- Choosing the right measure — when the median describes the middle best, and when the mode suits categorical data.
How the Test Works
- 25 questions, one at a time, with Next and Previous buttons.
- No timer, so you can think each question through.
- Automatic marking the moment you finish.
- Answer review — every question is shown again with your answer, the correct option and an explanation.
- Retake — restart as many times as you like.
Start the Chapter 11 Online Test
Work the arithmetic on paper rather than in your head. Most lost marks here come from sorting the values incorrectly before finding the median. Aim for 20 out of 25 or better before moving on.
Chapter 11 Online Test — Urdu Medium (اردو میڈیم)
Urdu medium students can attempt the same Chapter 11 test with the questions, options and explanations written in Urdu. It works exactly like the English test above: 25 questions one at a time, no timer, and a full answer review with explanations at the end.
اردو میڈیم کے طلبہ کے لیے: باب ۱۱، بائیو سٹیٹسٹکس، کا آن لائن ٹیسٹ نیچے دیا گیا ہے۔ پچیس سوالات ہیں، ہر سوال ایک ایک کر کے آتا ہے، وقت کی کوئی پابندی نہیں، اور آخر میں نتیجے کے ساتھ ہر سوال کا درست جواب اور وضاحت دکھائی جاتی ہے۔
After the Test
Read the explanation for every question you missed, then go back to that section in your textbook before you try the test again. Attempting it a second time a day later is the quickest way to find out what you have actually remembered rather than what you recognised.
Related Class 9 Biology Resources
Browse all Class 9 Biology test papers, or open the Class 9 Biology section for notes, test papers, online papers, guess papers and past papers.