28/03/2020 Statistics(Senior Class Maths Study by Topics) 28/03/2020 0Comments by Gate Academy Welcome to your Statistics(Senior Class Maths Study by Topics) NAME EMAIL PHONE NUMBER 1. The table below shows the marks obtained by 8 students taking English and PhysicsThe standard deviation for Physics is 21 12 19.8 24 2. The table below shows the frequency distribution of a number of pets in 25 houses Find the mean of the distribution 3.36 3.25 4.15 3.12 3. The following data gives the heights to the nearest metre of 55 treesUsing a working mean of 18 or otherwise , calculate the mean height 14.7 10.0 32 22.9 4. The mean of the prime number 1 and 20 is 77/8. When another prime number is added, the mean becomes 40/3 find the new prime number 43 33 31 23 5. If x is positive, and the standard deviation of x-1, x+1, 3, 2x-1 and x+3 is 2√2, find the value of x and hence calculate the mean deviation x=6, M.D = 4.2 x =6 , M.D = 2.4 x =4, M.D= 2.4 x= 4.3, M.D = 3 6. Find the mean and mean deviation, respectively of the following 5, -3, 6, -2, 4, -8, 4, 7, -10, 10 4.3, 2.64 1.3, 5.64 2.3, 4.64 3.3, 3.64 7. In a class of 20 students the scores in a Mathematics test out of 10 marks are as follows:5, 3, 6, 7, 8, 4, 5, 4, 9, 34, 6, 4, 5, 7, 4, 5, 6, 7, 2The mode of the scores is 5 7 6 4 8. The following marks were obtained by candidates in an examination What is the modal group 51-60 41-50 61-70 71-80 9. The mean age of a class of twenty school pupils is 12. If their teacher's age is included, the mean becomes 13. The age of the teacher is 25 39 33 28 10. Find the range and interquartile range, respectively, of the following data20, 30, 25, 28, 35, 25, 20, 27, 24 11, 4 15, 3 12, 5 15, 7 11. Find the variance and the standard deviation, respectively of the data below-3, -5, -7, 2, 5, 0, 4, 6 4.52, 20.2 20.4, 4.52 12.6, 19 12.3, 17 12. Find the mean and mean deviation, respectively of the following -3, -5, -7, 2, 5, 0, 4, 6 0.35, 3 4, 0.35 1.72, 1.12 0.25, 4 13. The table below shows the masses to the nearest kg of a group of market women.The median of the distribution is 73 kg 147/2 kg 72 kg 145/2 kg 14. The following are measures of dispersion except range mode standard deviation mean deviation 15. Find the variance and the standard deviation, respectively of the data below16, 18, 12, 14, 20, 25, 13, 15, 11 17.3, 4.16 1, 13 3.17, 14 11. 12.3 16. The table below shows the heights to the nearest cm of a group of peopleCalculate the range of the distribution 49 cm 29 cm 39 cm 59 cm 17. The table below shows the marks obtained by 8 students taking English and PhysicsCalculate the mean for Physics 32.5 12 57.5 11 18. In an experiment, the mean of 25 observations was 6. One of the observations, which has the value of 30, was cancelled. The mean of the remaining observations is 3.5 4.5 5 4.8 19. The weights to the nearest kg of a group of students are recorded in the following tableCalculate the median weight 52.5 kg 43.4 kg 56.4 kg 24.5 kg 20. The table below shows the marks obtained by 8 students taking English and PhysicsThe Standard deviation of English is 15 13.7 14.7 12.7 21. The average marks scored by 10 girls and 15 boys in a Physics test were 60 and 55, respectively, the average mark for the 25 students is 67 24 54 57 22. The following marks were obtained by candidates in an examination Calculate the median 45.7 54.6 10.8 12.9 23. The numbers 2, 5, 7, 8, 10, 15 and 13 are represented on a pie chart . The sum of the angles representing all numbers equal to or greater than 8 is 48 degrees 228 degrees 84 degrees 276 degrees 24. The prices of computers in a catalogue are: N125,000, N99,000, N125,000, N120,000, N110,000, N115,000, N130,000, N120,000, N100,000.Calculate the mean N214,000 N40,000 N56,000 N116,000 25. The scores of students in a class test are given in the table below:Marks 1 2 3 4 5 6 7 8 9 10Frequency 0 3 1 2 3 4 2 1 1 0The mean score is 5.1 4.9 5.0 4.8 1 out of 25 Time is Up! Time's up
