Chapter 15 – Probability
The mean of ungrouped data and the mean calculated when the same data is grouped are always the same. Do you agree with this statement? Give reason for your answer.
26
Nov
The mean of ungrouped data and the mean calculated when the same data is grouped are always the same. Do you agree with this statement? Give reason for your answer. The mean of ungrouped data and the mean calculated when the same data is grouped are always the same. Do you agree with this statement? [...]
A bag contains 3 red balls, 5 white balls, and 7 black balls. What is the probability that a ball drawn from the bag at random will be either red or black ball?
26
Nov
A bag contains 3 red balls, 5 white balls, and 7 black balls. What is the probability that a ball drawn from the bag at random will be either red or black ball? 5 white balls A bag contains 3 red balls and 7 black balls. What is the probability that a ball drawn from [...]
A card is selected at random from a well shuffled Deck of the 52 playing cards. The probability of its being a Face Card is .
26
Nov
A card is selected at random from a well shuffled Deck of the 52 playing cards. The probability of its being a Face Card is . A card is selected at random from a well shuffled Deck of the 52 playing cards. The probability of its being a Face Card is . November 26, 2020 [...]
Which of the following can be the probability of an event?
26
Nov
Which of the following can be the probability of an event? Which of the following can be the probability of an event? November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 ,
Consider the following frequency distribution of the heights of 60 students of a class. The sum of the lower limit of the modal class and the upper limit of the median class is :
26
Nov
Consider the following frequency distribution of the heights of 60 students of a class. The sum of the lower limit of the modal class and the upper limit of the median class is : Consider the following frequency distribution of the heights of 60 students of a class. The sum of the lower limit of [...]
In the following distribution : The numbers of families having income range (in Rs) 16000−19000 is:
26
Nov
In the following distribution : The numbers of families having income range (in Rs) 16000−19000 is: In the following distribution : The numbers of families having income range (in Rs) 16000−19000 is: November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 ,
Construction of a cumulative frequency table is useful in determining the
26
Nov
Construction of a cumulative frequency table is useful in determining the Construction of a cumulative frequency table is useful in determining the November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 ,
50 students enter for a school javelin throw competition. The distance (in metre) thrown are recorded below (i) Construct a cumulative frequency table. (ii) Draw a cumulative frequency curve (less than type) and calculate the median distance drawn by using this curve. (iii) Calculate the median distance by using the formula for median. (iv) Are the median distance calculated in (ii) and (iii) same?
26
Nov
50 students enter for a school javelin throw competition. The distance (in metre) thrown are recorded below (i) Construct a cumulative frequency table. (ii) Draw a cumulative frequency curve (less than type) and calculate the median distance drawn by using this curve. (iii) Calculate the median distance by using the formula for median. (iv) Are [...]
The following is the frequency distribution of duration for 100 calls made on a mobile phone. Calculate the average duration ( in sec ) of a call and also find the median from a cumulative frequency curve.
26
Nov
The following is the frequency distribution of duration for 100 calls made on a mobile phone. Calculate the average duration ( in sec ) of a call and also find the median from a cumulative frequency curve. Find the mean of the distribution November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - [...]
The annual rainfall record of a city for 66 days is given in the following table. Calculate the median rainfall using ogives (of more than type and of less than type)
26
Nov
The annual rainfall record of a city for 66 days is given in the following table. Calculate the median rainfall using ogives (of more than type and of less than type) The annual rainfall record of a city for 66 days is given in the following table. Calculate the median rainfall using ogives (of more [...]