Samacheer Kalvi solutions for Mathematics [English] Class 9 TN Board chapter 8 - Statistics [Latest edition]

In a week, temperature of a certain place is measured during winter are as follows 26°C, 24°C, 28°C, 31°C, 30°C, 26°C, 24°C. Find the mean temperature of the week

The mean weight of 4 members of a family is 60 kg. Three of them have the weight 56 kg, 68 kg and 72 kg respectively. Find the weight of the fourth member

In a class test in mathematics, 10 students scored 75 marks, 12 students scored 60 marks, 8 students scored 40 marks and 3 students scored 30 marks. Find the mean of their score

In a research laboratory scientists treated 6 mice with lung cancer using natural medicine. Ten days later, they measured the volume of the tumor in each mouse and given the results in the table

Find the mean

If the mean of the following data is 20.2, then find the value of p

In the class, weight of students is measured for the class records. Calculate mean weight of the class students using direct method

Calculate the mean of the following distribution using Assumed Mean Method

Find the Arithmetic Mean of the following data using Step Deviation Method:

Find the median of the given values : 47, 53, 62, 71, 83, 21, 43, 47, 41

Find the median of the given data: 36, 44, 86, 31, 37, 44, 86, 35, 60, 51

The median of observation 11, 12, 14, 18, x + 2, x + 4, 30, 32, 35, 41 arranged in ascending order is 24. Find the values of x

A researcher studying the behavior of mice has recorded the time (in seconds) taken by each mouse to locate its food by considering 13 different mice as 31, 33, 63, 33, 28, 29, 33, 27, 27, 34, 35, 28, 32. Find the median time that mice spent in searching its food.

The following are the marks scored by the students in the Summative Assessment exam

Calculate the median.

The mean of five positive integers is twice their median. If four of the integers are 3, 4, 6, 9 and median is 6, then find the fifth integer

The monthly salary of 10 employees in a factory are given below:

₹ 5000, ₹ 7000, ₹ 5000, ₹ 7000, ₹ 8000, ₹ 7000, ₹ 7000, ₹ 8000, ₹ 7000, ₹ 5000

Find the mean, median and mode

Find the mode of the given data: 3.1, 3.2, 3.3, 2.1, 1.3, 3.3, 3.1

For the data 11, 15, 17, x + 1, 19, x – 2, 3 if the mean is 14, find the value of x. Also find the mode of the data

The demand of track suit of different sizes as obtained by a survey is given below:

Which size is in greater demanded?

Find the mode of the following data:

Find the mode of the following distribution:

Let m be the midpoint and b be the upper limit of a class in a continuous frequency distribution. The lower limit of the class is

The mean of a set of seven numbers is 81. If one of the numbers is discarded, the mean of the remaining numbers is 78. The value of discarded number is

A particular observation which occurs maximum number of times in a given data is called its

For which set of numbers do the mean, median and mode all have the same values?

The algebraic sum of the deviations of a set of n values from their mean is

The mean of a, b, c, d and e is 28. If the mean of a, c and e is 24, then mean of b and d is

If the mean of five observations x, x + 2, x + 4, x + 6, x + 8, is 11, then the mean of first three observations is

The mean of 5, 9, x, 17 and 21 is 13, then find the value of x

The mean of the square of first 11 natural numbers is

The mean of a set of numbers is `bar(X)`. If each number is multiplied by z, the mean is