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 diagram illustrates the distribution of marks in a class testThe total number of students who sat for the test is 35 40 36 48 None 2. The weights to the nearest kg of a group of students are recorded in the following tableCalculate the mean weight 32.7 52.6 43 23.4 None 3. Find the mean and mean deviation, respectively of the following 16, 18, 12, 14, 20, 25, 13, 15, 11 Choose File Drag and Drop File Here or Browse 4. Class 1-3 4-6 7-9Frequency 5 8 5The standard deviation of the frequency distribution in the table above is 5 2.2 1 2.5 None 5. The total income of a household for one year is N60,000. This amount is spent on rent(R), food(F), education for the children(E), general maintenance(G) and miscellaneous items(M).What is the amount spent on food items N10,000 N20,000 N30,000 N15,000 None 6. The mean of 25 numbers is 8. If the largest value 32 is removed, what is the mean of the remaining numbers? 6 5 8 7 None 7. The table below shows the marks obtained by 8 students taking English and PhysicsCalculate the mean of English subject 45 65 75 85 None 8. Four angles of the sectors of a pie are 84°, 72°, 56° and 78°. If the fifth sector represents a population of 1.6 million, what population will the sector with 56° represent? 1.5 million 2 million 1.75 million 1.28 million None 9. The following marks were obtained by candidates in an examination Calculate the 42nd percentile 71.3 51.5 61.5 81.5 None 10. The distribution of a housewife's expenditure on four food items is as follows:Item A (£80), Item B (£45), Item C (£30), Item D (£25). The sum of the angles of the sectors representing the expenditure on items B and D is 70 90 140 220 None 11. The weights to the nearest kg of a group of students are recorded in the following tableCalculate the median weight 43.4 kg 52.5 kg 24.5 kg 56.4 kg None 12. The table below shows the masses to the nearest kg of a group of market women.The percentage of the women with mass not less than 74kg is 75/2 % 40 % 35/2 % 50% None 13. Find the range and interquartile range, respectively, of the following data5, 7, 2, 8, 9, 5, 7, 7, 10, 3, 6, 6 8, 5 8, 3 5, 2 5, 3 None 14. Number 1 2 3 4 5 Frequency 1 3 2 3 1The variance of the frequency distribution in the table above is 1.5 1 1.2 1.4 None 15. The table below shows the frequency distribution of a number of pets in 25 houses Find the mean of the distribution 4.15 3.12 3.25 3.36 None 16. The average age of the three children in a family is 9 yr. If the average age of their parents is 39 yr, the average age of the whole family is 24 yr 20 yr 21 yr 27 yr None 17. The following data gives the heights to the nearest metre of 55 treesCalculate the interquartile range 10.98 12.73 22.98 20 None 18. The table below shows the marks obtained by 8 students taking English and PhysicsThe standard deviation for Physics is 21 19.8 12 24 None 19. The following marks were obtained by candidates in an examination Calculate the median 54.6 10.8 12.9 45.7 None 20. In a certain country last year a total of 500 million tons of trash was recycled. The chart below shows the distribution, in millions of tons, for the different types of trashes. How many tons of Iron/Steel was recycled? 14% 12% 15% 13% None 21. The distribution of grades in a Mathematics examination taken by a class of 72 students is represented on a pie chart. If the angle of the sector representing the number of students who scored the A grade is 30°, the actual number of A grades scored is 6 12 8 9 None 22. 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 4 6 None 23. The marks scored by students in a test are recorded in the table belowCalculate the median 3 4 6 5 None 24. If a 24 hour day is represented on a pie chart, what is the angle of the sector corresponding to the period between 3 pm on a Monday and 6 am on the following Tuesday? 240 degrees 180 degrees 270 degrees 225 degrees None 25. The following table shows the grouped data, in classes, for the heights of 50 people. height (in cm) - classes frequency 120 <- 130 2 130 <- 140 5 140 <- 150 25 150 <- 160 10 160 <- 170 8 Calculate the mean of the salaries of the 20 people. 87.4 170 129.4 148.4 None 1 out of 25 Time's upTime is Up!