Mathematics Class 9 Chapter 11: Basic Statistics
Premium chapter
Chapter summary
Chapter 11 of Mathematics for Class 9 is called "Basic Statistics". It covers 7 learning outcomes of the Federal Board syllabus. You will learn to: calculate the mean, modal class and median of a grouped; solve real life situations involving mean, weighted mean. Parhayi.com has 598 MCQs, 122 short questions and 40 long questions for this chapter.
Topics in this chapter
- Calculate the mean, modal class and median of a grouped…
- Solve real life situations involving mean, weighted mean…
- Calculate the probability of a single event and the…
- Solve real life problems involving probability
- Calculate relative frequency as an estimate of probability
- Calculate expected frequencies
- Solve real life problems involving relative and expected…
Sample questions
Try these questions from the chapter. The answers are for Premium students.
- A bag contains 5 red, 3 blue and 2 green balls. One ball is drawn at random from the bag. Calculate the probability that: (a) The drawn ball is red. (b) The drawn ball is NOT blue. (4 marks)
- A grocer buys 10 kg of sugar at Rs. 190 per kg, 50 kg at Rs. 160 per kg and 20 kg at Rs. 250 per kg. Find the average cost per kg (weighted mean). (3 marks)
- A bag contains 3 blue, 5 red, 5 white and 3 green balls. A ball is drawn at random. Find the probability of each colour and show that the probabilities add up to 1. (4 marks)
What Premium gives you in this chapter
- 598 MCQs with answers and explanations
- 122 short questions with full answers
- 40 long questions with answers
- 14 Learn cards
- 10 Activities and games
- chapter tests that show your weak topics
Mathematics grows step by step. Read the rule, study one worked example, then solve similar questions yourself and check every step.
You have Premium
Use the buttons above to practise this chapter or take a test.