Also, learn to use the short-cut method, the step-deviation method and the direct method to calculate the mean. Find the mean of the following set of numbers:. Marks obtained in mathematics by 9 student are given below:. Find the mean of the natural numbers from 3 to Numbers between 3 to 12 are 3, 4, 5, 6, 7, 8, 9, 10, 11 and If the mean of 6, 4, 7, 'a' and 10 is 8. Find the value of 'a'. From i and ii. The mean of the number 6, 'y', 7, 'x' and 14 is 8.
Express 'y' in terms of 'x'. The ages of 40 students are given in the following table:. Age in yrs. Find the arithmetic mean. Icde The following table gives the heights of plants in centimeter. If the mean height of plants is Height cm.
From the ocse given below, calculate the mean wage, correct to the nearest rupee. The contents of match boxes were checked to determine the number of matches they contained. If the mean of the following distribution is 3, find the value of p. Find the missing frequencies f 1and f 2. Find the arithmetic mean correct to the nearest whole-number by using step-deviation method. Find the mean correct to one place of decimal by using short-cut method.
The following table gives the ages of 50 students of a class. Find the arithmetic mean of their ages. Age - Years. Age in years. Number of students f i. The following table gives the weekly wages of workers in a factory.
Weekly Wages Rs. Calculate the icsr by using:. Weekly Wages. Weekly wages Rs. The following are the marks obtained by 70 boys in a class test:. Calculate the mean by:. Mid-value x i. Find mean by step - deviation method:.
Frequency f concise mathematics class 10 icse solutions chapter 24 sum. The mean of the following frequency distribution is. Find the value of 'f'. Using step-deviation method, calculate the mean marks of cyapter following distribution. Mid value x i. Using the information given in the claxs histogram, calculate the mean.
Mid value x. If the mean concise mathematics class 10 icse solutions chapter 24 sum the concise mathematics class 10 icse solutions chapter 24 sum observations is 54, find the value of 'p'.
Frequency f. Mid Value x. The mean of the following distribution is Find the missing frequencies f 1 and ssum 2. Freq f. Mid value. Now. Calculate the mean of amthematics distribution, given below, using the short cut method :. A student got the following marks in 9 questions of a question paper. Find the median of these marks. Arranging the given data in descending order:. The middle term is 4 which is the 5 th term. The weights in kg of 10 students of a class are given below:.
Find the median of their weights. The middle terms are 24 and 24, 5 th and 6 th terms. The marks obtained by 19 students of a class are given below:. Arranging in ascending order:. From the following data, find:. Arrange in ascending order:. The ages of 37 students in a class are given in the following table:. Find the median. The weight of 60 boys are given in the following distribution table:. Weight kg. Estimate the median for the given data concise mathematics class 10 icse solutions chapter 24 sum drawing an ogive:.
Cumulative Frequency. Through mark of From A, draw a perpendicular to x-axis, which meets concise mathematics class 10 icse solutions chapter 24 sum at B. The value of B is the median which is By drawing an ogive, estimate the median for the following frequency distribution:. Through mark of 28 on the y-axis, draw a line parallel to x-axis which meets the curve at A. From the following cumulative frequency table, find:.
Marks less. Cumulative frequency. From A, draw a perpendicular to x-axis which meets it at B. In a school, pupils have heights as tabulated below:.
Find the median height by drawing an ogive. Through 50 th term mark draw a line parallel to the x-axis which meets the curve at A. Find the mode of the following data:. Since 7 occurs 4 times. Since it occurs 4 times. The following table shows the frequency distribution of heights of 50 boys:. Find the mode of heights. Mode is cm because it occur maximum number of times.
Find the mode of following data, using a histogram:. Mode is inbecause in this class there are 20 frequencies. The following table shows the expenditure of 60 boys on books. Find the mode of their expenditure:. Mode is in because it has the maximum frequency. Find the median and mode for the set of numbers:.
A boy scored following marks in various class tests during a term; each test being cchapter out of Arranging the given data in ascending order:. Find the mean, median and mode of the following marks obtained by 16 students in a class test marked out of 10 marks. At a shooting competition the score of a competitor were as given below:. The following distribution represents the height of students of a school.
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