28/03/2020 Statistics(Senior Class Maths Study by Topics) 0Comments by Gate Academy Welcome to your Statistics(Senior Class Maths Study by Topics) NAME EMAIL PHONE NUMBER 1. No. of goals 0 1 2 3 4 5Frequency 5 6 12 10 2 1If cF(x) is the number of goals less than or equal to x, then cF(1) and cF(3) are, respectively11, 336, 105, 2311, 232. Find the range of the following datax+2, x-5, x+6, x-2, x-7, x+3, x-10, x-1x+4x-212163. The pie chart below shows the distribution of the expenditure of a household on various food items in a certain month. If N200 was spent on fruits, how much was spent on rice?N400N800N1,000N6004. The following marks were obtained by candidates in an examination What percentage of the candidates scored above 70 marks?11.4%15.2%4.5%8.4%5. The variance and standard deviation of the set of numbers-4, -2, 0, 2, 4 are, respectively4, 264, 88, 2.80, 06. 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 is575467247. The following data gives the heights to the nearest metre of 55 treesUsing a working mean of 18 or otherwise, calculate the standard deviation10.3 m11.2 m8.3 m7.1 m8. 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 is283325399. 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?191201301210. 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 itemsN10,000N30,000N20,000N15,00011. 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 number3143332312. The table below shows the marks obtained by 8 students taking English and PhysicsCalculate the mean for Physics57.532.5121113. The scores of a group of five students are4, 5, 6, 7, 8.The mean deviation is1.21.52.01.014. No. of goals 0 1 2 3 4 5Frequency 5 6 12 10 2 1The total number of goals scored by all the teams is7072737815. 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.17087.4129.4148.416. The marks scored by students in a test are recorded in the table belowCalculate the standard deviation2.341.842.131.3417. 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 modal score is576418. 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 median score is5.534.5519. The average age of 4 children is 15 years. If the ages of their parents are added, the average age is 25. What is the age of the father if he is 4 years older than his wife?42 yrs46 yrs47 yrs35 yrs20. Number 1 2 3 4 5 Frequency 1 3 2 3 1The variance of the frequency distribution in the table above is1.41.51.2121. Find the variance and the standard deviation, respectively of the data below5, -3, 6, -2, 4, -8, 4, 7, -10, 1040.2, 6.3420.1, 5.3460, 7.3410.4, 4.3422. 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 million1.75 million2 million1.28 million23. The following data gives the heights to the nearest metre of 55 treesUsing a working mean of 18 or otherwise , calculate the mean height10.03214.722.924. 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 degrees225 degrees270 degrees180 degrees25. The diagram illustrates the distribution of marks in a class testThe percentage of students who scored less than 5 marks is67%33%75%50%26 out of 25Time is Up!