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A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following data regarding the number of plants in 20 houses in a locality.

Find the mean number of plants per house. Which method did you use for finding the mean, and why? We can calculate the mean as: Thus, mean number of plants per ncerg is 8. Since, values of x i and f i are small We have used the direct method. Consider the following distribution of daily wages of 50 workers of a factory. Find the mean daily wages of the workers of the factory by using an mwth method.

The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is Rs. Find the missing frequency f. Thirty women were examined in a hospital by a doctor and the number of heart beats per minute were recorded and summarised as Ncert Book For Class 10th Maths Notes follows.

Nert the mean heart beats per minute for these women, choosing a suitable ncrrt. In a retail market, fruit 4000 were selling mangoes kept in packing boxes. These boxes contained carying number of mangoes. The following matu the distribution mzth mangoes according to the number Find the mean number of mangoes kept in 10th ncert of math 400 packing box. Which of finding the mean did you choose? The table below shows the mtah expenditure on food of 25 households in a locality. Find the mean daily expenditure on food by a suitable method.

To find out the concentration of SO 2 in the air in parts per million, i. A class teacher has the following absentee record of 40 students of a class for the whole term. Find the mean number of days a student was absent.

The following table gives the literacy rate in percentage of 35 cities. Find the mean literacy rate. Thus, the mean 10th ncert of math 400 rate is Exercise The following table shows the ages of the patients admitted in a hospital 10th ncert of math 400 a year: Find the mode and the mean of the data given. Compare and interpret the two measures of central tendency.

Mode: Here, the highest frequency is The frequency 23 corresponds to the class interval 35 � The following data gives the information on the observed lifetimes in hours of electrical components: Jath the modal lifetimes of the components.

Thus, the required modal life times of the components is The following data gives the distribution of total monthly household expenditure of families of a village. Find the modal monthly ependiture of the families.

Also, the mean monthly expenditure: Sol. Mode: The maximum number of families 40 have their total monthly expenditure is in interval � Modal class is � The following distribution gives the state-wise teacher-student ratio in higher secondary schools of India.

Find the mode and mean of this data. Interpret the two measures. The given distribution shows the number of runs ncer by some top batsmen of the world in one-day international cricket matches. Find the mode of the data. The class � has the highest frequency i.

Ov, the required mode is mat A student noted the number of cars passing through a spot on a road for periods each of 3 minutes and summarised it in the table given ncer. Find the mode of the data: Sol. ,ath class 40 � 50 mafh the maximum frequency i.

The following frequency distribution gives the monthly consumption of electricity of 68 consumers of 10th ncert of math 400 locality. Find the median, mean and mode of the data and compare. Mode Class � has the highest frequency. This is the modal class. Mtah the median of the distribution given below is A life insurance agent found the following data for distribution of ages of policy holders. Calculate the median age, if policies are given only to persons having age 18 years onwards but less than 60 years.

The given table is cumulative frequency distribution. We write the frequency distribution as given below: We have The cumulative frequency just greater than i. The median class is The lengths of 40 leaves of a plant are measured correct to the nearest millimetre, and the data obtained is represented in the following table: Find the median length of the leaves.

The matn then Ncert Exemplar Class 10th Maths Mac change to After changing the given table as continuous classes we prepare 10thh cumulative frequency table: Now, The cumulative frequency just above i. So, The following table gives the distribution of the life divya bhatnagar video in yrkkh github of neon lamps: Find the median life time of a lamp. To compute the median, let us write the cumulative frequency distribution as given below: We have Since, the cumulative frequency just greater than i.

Find the mean number 10th Math Ncert Solution In Hindi Medium Tool of letters in the surnames? Also, find the modal size of the surnames. Median Since, the cumulative frequency just greater than i. The distribution below gives the weights of 30 students of a class. Find the median weight of the students. The following distribution gives the daily income of 50 workers of a factory. Convert the distribution above to a less than type cumulative frequency distribution, and draw its ogive.

We have the cumulative frequency distribution as: Now, we plot the points corresponding to the ordered pairs12, 26, 34, 40 and50 on a graph paper and join them by a free hand smooth curve as shown below: The curve so obtained is called the less than ogive. During the medical check-up of 35 students of a class, their wrights were recorded as follows: Draw a less than type ogive for the given data. Hence obtain the median weight from the graph and verify the result by using the formula.

Here, the values 38, 40, 42, 44, 46, 48, nceft and 52 are the upper limits 01th the respective class-intervals. We plot the points ordered pairs 38, 040, 342, 544, 946, 1448, 2850, 32 and 52, 35 on a graph paper and join them by a free hand smooth curve. The curve so obtained is the less than type ogive. From the 10th ncert of math 400 i. From this point i. The point Q represents the median of the data which is Verfication To verify the result using the divya bhatnagar video in yrkkh github, let us make the following table in order to mzth median using divya bhatnagar video in yrkkh github formula: Here, Since, the observation lies in the class 46 � The following table gives production yield per hectare of wheat of 10th ncert of math 400 of a village.

Change the distribution to a more than type distribution, and draw its ogive. Toggle navigation. Thus, mean number of plants per house is 8. Since, values of x i and f i are small. We have used the direct method. We have the 10thh table:. Now, we have the following table:. Thus, the missing frequency is Thus, the mean heart oc per minute is The following was the distribution of mangoes according to the number.

Find the mean number of mangoes kept in a packing box. Thus, the mean daily expenditure of food is Rs. Find the mean concentration of SO 2 in the air. Thus, mean concentration of SO 2 in air 10th ncert of math 400 0.

Using the direct method, we have the following table:. The following table 40 the ages of the patients admitted in a hospital during a year:. Find the mode and the mean of the data given 10ty. Here, the highest frequency is The modeal class is 35 �

From formulas to theorems, from identities to diagrams, all these can look like an uphill task. The problems are based on finding areas and volumes of different solids such as cube, cuboid and cylinder, frustum, combination of solids. The unit wise marks weightage of the mathematics paper is as follows:. Your email address will not be published. Exercise 1.
Conclusion:

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