Chapter 15 Probability Ex 15.1 eng

Chapter 15 Probability Ex 15.1 Question 1. In a cricket match, a batswoman hits a boundary 6 times out of 30 balls she plays. Find the probability that she did not hit a boundary. Solution: Question 2. 1500 families with 2 children were selected randomly, and the...

Chapter 14 Statistics Ex 14.4 eng

Chapter 14 Statistics Ex 14.4 Question 1. The following number of goals were scored by a team in a series of 10 matches 2, 3, 4, 5, 0, 1, 3, 3, 4, 3. Find the mean, median and mode of these scores. Solution: (iii) Mode Arranging the given data in ascending order, we...

Chapter 14 Statistics Ex 14.3 eng

Chapter 14 Statistics Ex 14.3 Question 1. A survey conducted by an organisation for the cause of illness and death among the women between the ages 15-44 (in years) worldwide, found the following figures (in %) (i) Represent the information given above graphically....

Chapter 14 Statistics Ex 14.2 eng

Chapter 14 Statistics Ex 14.2 Question 1. The blood groups of 30 students of class VIII are recorded as follows A, B, 0, 0, AB, 0, A, 0, B, A, 0, B, A, 0, 0, A, AB, 0, A, A, 0, 0, AB, B, A, 0, B, A, B, 0 Represent this data in the form of a frequency distribution...

Chapter 14 Statistics Ex 14.1 eng

Chapter 14 Statistics Ex 14.1 Question 1. Give five examples of data that you collect from your day-to-day life. Solution: Five examples of data that we can gather from our day-to-day life are (i) number of students in our class. (ii) number of fans in our class....
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