Chapter 15 – Probability

If an event cannot occur, then its probability is If an event cannot occur then its probability is November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 ,

Consider the following distribution : Marks obtained Number of students The frequency of the class 30-40 is Consider the following distribution : Marks obtained Number of students The frequency of the class 30-40 is November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 ,

The times, in seconds, taken by 150 athletes to run a 110 m hurdle race are tabulated below The number of athletes who completed the race in less than 14.6 seconds is : in seconds taken by 150 athletes to run a 110 m hurdle race are tabulated below The number of athletes who completed [...]

Consider the data : The difference of the upper limit of the median class and the lower limit of the modal class is Consider the data : The difference of the upper limit of the median class and the lower limit of the modal class is November 26, 2020 Category: Chapter 14 - Statistics , [...]

For the following distribution: Marks Number of students Below 10 3 Below 20 12 Below 30 27 Below 40 57 Below 50 75 Below 60 80 The modal class is For the following distribution: Marks Number of students Below 10 3 Below 20 12 Below 30 27 Below 40 57 Below 50 75 Below 60 [...]

Consider the following frequency distribution: Class 0-05 6-11 12-17 18-23 24-29 Frequency 13 10 15 8 11 The upper limit of the median class is Consider the following frequency distribution: Class 0-05 6-11 12-17 18-23 24-29 Frequency 13 10 15 8 11 The upper limit of the median class is November 26, 2020 Category: Chapter [...]

For the following distribution : Class 0-05 5-10 10-15 15-20 20-25 Frequency 10 15 12 20 9 the sum of lower limits of the median class and modal class is For the following distribution : Class 0-05 5-10 10-15 15-20 20-25 Frequency 10 15 12 20 9 the sum of lower limits of the median [...]

The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its November [...]

In the formula x = a + h(fiui/fi), for finding the mean of grouped frequency distribution, ui = for finding the mean of grouped frequency distribution In the formula x = a + h(fiui/fi) ui = November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 [...]

If xi’s are the mid points of the class intervals of grouped data, fi’s are the corresponding frequencies and x is the mean, then (fixi – x¯¯¯ ) is equal to fi’s are the corresponding frequencies and x is the mean If xi’s are the mid points of the class intervals of grouped data then [...]