Mathematics is like music – Enjoy it!!!
Example 1: Consider the marks obtained by 10 students in a mathematics test as given below: 55 36 95 73 60 42 25 78 75 62 The data in this form is called raw data. By looking at it in…
Read MoreQuestion 1: Give five examples of data that you can collect from your day-to-day life. Question 2: Classify the data in Q.1 above as primary or secondary data. Class 9 | Home Ex: 14.2 | Question 1
Read MoreStatistics This tutorial is recommended for the beginners to watch to understand the following: What is statistics Data Information Frequency distribution table Ungrouped Grouped Class Intervals Overlapping Non-overlapping Class limits Upper class limit Lower class limit
Read MoreQuestion 13: In Q.1, Exercise 14.2, you were asked to prepare a frequency distribution table regarding the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at…
Read MoreQuestion 12: In Q.5, Exercise 14.2, you were asked to prepare a frequency distribution table, regarding the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 days. Using this table, find the…
Read MoreQuestion 11: Eleven bags of wheat flour, each marked 5kg, actually contained the following weights of flour (in kg): 4.97 5.05 5.08 5.03 5.00 5.06 5.08 4.98 5.04 5.07 5.00 Find the probability that any of these bags chosen at…
Read MoreQuestion 10: Activity : Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3? Remember that…
Read MoreQuestion 9: Activity : Note the frequency of two-wheelers, three-wheelers and four-wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is…
Read MoreQuestion 8: Refer to Q.2, Exercise 14.2. What is the empirical probability that an engineer lives: less than 7 km from her place of work? more than or equal to 7 km from her place of work? within 1/2 km…
Read MoreQuestion 7: To know the opinion of the students about the subject statistics, a survey of 200 students was conducted. The data is recorded in the following table. Find the probability that a student chosen at random (i) likes statistics,…
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