Question 1 :
The probability that a non leap year selected at random will contain 53 sundays is
Question 2 :
The probability of getting a bad egg in a lot of 400 is 0.035. The number of bad eggs in the lot is
Question 3 :
A card is selected from a deck of 52 cards. The probability of its being a red face card is
Question 4 : Consider the following frequency distribution :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19b70273b2305849799a2.PNG' />
The upper limit of the median class is
Question 5 : In the following distribution :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19b8e273b2305849799c8.PNG' />
The number of families having income range (in Rs) 16000 – 19000 is
Question 6 :
In the formula, $\bar{x} = a + h\frac{f_i * u_i}{f_i}$, for finding the mean of grouped frequency distribution, $u_i =$
Question 7 :
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 neither red nor black?
Question 8 :
One ticket is drawn at random from a bag containing tickets numbered 1 to 40. The probability that the selected ticket has a number which is a multiple of 5 is
Question 9 :
Which of the the following can be the probability of an event?
Question 11 :
A card is drawn from a deck of 52 cards. The event E is that card is not an ace of hearts. The number of outcomes favourable to E is
Question 12 :
If $x_i$’s are the mid points of the class intervals of grouped data, $f_i$’s are the corresponding frequencies and $\bar{x}$ is the mean, then $(f_i * x_i - \bar{x})=$
Question 13 :
Which of the following cannot be the probability of an event?
Question 14 :
In the formula $\bar{x} = a + \frac{f_i d_i}{f_i}$ for finding the mean of grouped data $d_i$’s are deviations from a of
Question 16 :
Construction of a cumulative frequency table is useful in determining the
Question 17 :
A girl calculates that the probability of her winning the first prize in a lottery is 0.08. If 6000 tickets are sold, how many tickets has she bought?
Question 18 : Consider the following distribution :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19b72273b2305849799a6.jpg' />
The frequency of the class 30-40 is
Question 19 :
State True or False: To find the mean of grouped data, it is assumed that the frequency of each class interval is centred around its mid-point.
Question 20 :
Someone is asked to take a number from 1 to 100. The probability that it is a prime is
Question 21 :
An event is very unlikely to happen. Its probability is closest to
Question 22 :
A card is selected at random from a well shuffled deck of 52 playing cards. The probability of its being a face card is
Question 23 :
If n is the total number of observations, locate the class whose cumulative frequency is greater than (and nearest to) $\frac{n}{2}$.Is it TRUE or FALSE that, this class is called the median class.
Question 24 : For the following distribution :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19b6f273b2305849799a1.PNG' />
The sum of lower limits of the median class and modal class is
Question 25 : Consider the following frequency distribution of the heights of 60 students of a class :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19b8e273b2305849799c9.PNG' />
The sum of the lower limit of the modal class and upper limit of the median class is?
Question 26 :
The probability expressed as a percentage of a particular occurrence can never be
Question 27 :
If the probability of an event is p, the probability of its complementary event will be
Question 29 : The times, in seconds, taken by 150 atheletes to run a 110 m hurdle race are tabulated below :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19b71273b2305849799a4.jpg' />
The number of atheletes who completed the race in less then 14.6 seconds is :
Question 30 :
While computing mean of grouped data, we assume that the frequencies are
Question 31 :
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
Question 32 :
A school has five houses A, B, C, D and E. A class has 23 students, 4 from house A, 8 from house B, 5 from house C, 2 from house D and rest from house E. A single student is selected at random to be the class monitor. The probability that the selected student is not from A, B and C is
Question 33 : Consider the data:
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19b72273b2305849799a5.jpg' />
The difference of the upper limit of the median class and the lower limit of the modal class is
Question 34 :
In any situation that has only two possible outcomes, each outcome will have probability $\frac{1}{2}$.
Question 35 :
State True or False. In a grouped frequency distribution, it is not possible to determine the mode by looking at the frequencies. To find the mode of grouped data, locate the class with the maximum frequency. This class is known as the modal class. The mode of the data is a value inside the modal class.
