Ncert -class10-Maths – STATISTICS Welcome to your Ncert -class10-Maths - STATISTICS 1. Rahul and Ravi planned to play Business (board game) in which they were supposed to use two dice. Ravi got the first chance to roll the dice. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is 8? 1/18 1/26 0 5/36 None 2. The mean of 25 observations is 9. If each observation is increased by 4, then the new mean is 14 13 17 15 None 3. If Mode of data 64, 60, 48, x, 43, 48, 43, 34 is 43 then x+3 is 45 44 46 48 None 4. None 5. If Arithmetic Mean of x, x+2, x+4 and x+6 is 5. Then find the value of x is 3 2 5 1 None 6. On a weekend Ritu was playing cards with her family. The deck has 52 cards. If her brother drew one card.Find the probability of getting a king of red colour. 1/26 1/13 1/4 1/52 None 7. A data has 25 observations arranged in descending order. Which observation represents the median? 13th 15th 12th 14th None 8. If Median of data 16,18, 20, 24-x, 20 + 2x, 28, 30, 32 is 24 then x is 4 18 16 20 None 9. Mean of 100 items is 49.It was discovered that 3 items which should have been 60, 70 , 80 were wrongly read as 40, 20,50 respectively.The correct mean is : 50 49 48 60 None 10. The given question consists of two statement _ assertion and reason Answer the question selecting the appropriate option given below:ASSERTION If the value of mode and mean is 60 and 66 respectively , then value of median is 64.Reason : Median = (mode+2mean) Both Assertion and Reason are correct and reason is Both Assertion and Reason are false but reason is not correct explanation for assertion Assertion is correct but reason is false. Both Assertion and reason are false None 11. The Mean of five number is 15. If we include one more number, the mean of 6 numbers become 17. The included number is 42 27 22 2 None 12. While computing mean of grouped data ,we assume that the frequencies are : centered at the lower limits of the classes centered at the class marks of the classes. centered at the upper limits of the classes. evenly distributed over all the classes None 13. Ishan is a wholesale dealer in eggs. He procures eggs directly from the poultry farms and sells them to the nearby stores.The probability of getting a bad egg in a lot of 500 is 0.014. the number of bad eggs in the lot is: 14 7 21 17 None 14. Which is the empirical relation between Mean, Median and Mode 3Median=Mode +2Mean 3Mean =Mode +2Median 3Median=Mode -2Mean 2Median= Mode +3Mean None 15. If Arithmetic Mean of a, a+3, a+6, a+9 and a+12 is 10, then a is equal to: 1 2 3 4 None 16. Two friends are playing a game.If two dice are thrown in the air by one of the friend, the probability of getting sum as 3 will be 1/36 1/18 2/18 3/18 None 17. The probability of event equal to zero is called; Independent event Impossible event Sure Event Unsure event None 18. Assertion (A): If the mode and mean of a grouped frequencydistribution are 60 and 66 respectively, then the median is 64.Reason (R): Median = (mode+2mean) /2 Both assertion (A) and reason (R) are true and Reason (R) is the correct explanation of Assertion (A). Assertion (A) is true but Reason (R) is false Assertion (A) is false but Reason (R) is true. Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A). None 19. The mean age of combined group of men and women is 30 years. If the mean of the age of men and women are respectively 32 and 27, then the percentage of women in the group is: 30 20 40 50 None 20. Assertion (A): If the number of runs scored by 11 players of the cricket team of India are 5, 19, 42, 11, 50, 30, 21, 0, 52, 36, 27 then median is 30.Reason (R): Median = ((n+1) /2)thvalue, if n is odd Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A). Assertion (A) is true but Reason (R) is false. Assertion (A) is false but Reason (R) is true. Both assertion (A) and reason (R) are true and Reason (R) is the correct explanation of Assertion (A). None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.