Tamil Nadu Board Solutions for Chapter: Statistics, Exercise 5: Exercise

In a week, temperature of a certain place is measured during winter are $26°\mathrm{C}, 24°\mathrm{C}, 28°\mathrm{C}, 31°\mathrm{C}, 30°\mathrm{C}, 26°\mathrm{C}$ and $24°\mathrm{C}$. Find the mean temperature of the week.

The mean weight of $4$ members of a family is $60 \mathrm{kg}$.Three of them have the weight $56 \mathrm{kg}, 68 \mathrm{kg}$ and $72 \mathrm{kg}$ respectively. If $y \mathrm{kg}$ is the weight of the fourth member, find the value of $y$.

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 to the nearest whole number.

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. If the mean is $k {\mathrm{mm}}^3$, find the value of $k$ in decimal.

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

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

The following data gives the number of residents in an area based on their age. Find the average age of the residents.

The following table represents the marks obtained by a group of $12$ students in a class test in Mathematics and Science.

Indicate in which subject, the level of achievement is higher?