Question 1 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c19273b230584979a75.PNG' />
The above table gives the distribution of the life time of 400 neon lamps. Find the median lifetime of a lamp.(In hours)
Question 2 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c12273b230584979a6d.PNG' />
The above table shows the ages of the patients admitted in a hospital during a year. Find the mode of the data given above.
Question 3 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c17273b230584979a73.PNG' />
100 surnames were randomly picked up from a local telephone directory and the frequency distribution of the number of letters in the English alphabets in the surnames was obtained as given above. Determine the median number of letters in the surnames.
Question 4 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c02273b230584979a5a.PNG' />
A survey regarding the heights (in cm) of 51 girls of Class X of a school was conducted and the above data was obtained. Find the median height.
Question 5 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c11273b230584979a6c.PNG' />
The above data gives the distribution of total monthly household expenditure of 200 families of a village. Find the mean monthly expenditure.
Question 6 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c1d273b230584979a7a.PNG' />
The above distribution gives the daily income of 50 workers of a factory. Convert the distribution above to a less than type cumulative frequency distribution, and choose its ogive.
Question 7 : <img style='object-fit:contain' src='61b19a62273b230584979934' />
A class teacher has the above absentee record of 40 students of a class for the whole term. Find the mean number of days a student was absent.
Question 8 : <img style='object-fit:contain' src='61b19b06273b230584979948' />
The distribution given above gives the weights of 30 students of a class. Find the median weights of the students.
Question 9 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c13273b230584979a6e.PNG' />
The above distribution gives the state-wise teacher-student ratio in higher secondary schools of India. Find the mode of this data.
Question 10 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c08273b230584979a61.PNG' />
To find out the concentration of $SO_2$ in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented above. Find the mean concentration of $SO_2$ in the air.
Question 11 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c26273b230584979a83.PNG' />
During the medical check-up of 35 students of a class, their weights were recorded as given above. Draw a less than type ogive for the given data and pick the correct option representing it.
Question 12 : <img style='object-fit:contain' src='61b19afd273b230584979947' />
The length of 40 leaves of a plant are measured correct to the nearest milimetre and the data obtained is represented in the above table. Find the median length of leaves.
Question 13 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c09273b230584979a62.PNG' />
A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the above given data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house.
Question 14 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c00273b230584979a58.PNG' />
The median of the above data is 525. Find the values of x and y, if the total frequency is 100.
Question 15 : <img style='object-fit:contain' src='61b19ab9273b23058497993f' />
The above data gives the infomation on the observed lifetimes (in hours) of 225 electrical bulbs. Determine the modal lifetime of the components.
Question 16 : <img style='object-fit:contain' src='61b19aa7273b23058497993c' />
The above table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.
Question 17 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c14273b230584979a6f.PNG' />
The above given frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the mean.
Question 18 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c1c273b230584979a79.PNG' />
If the median of the distribution given above is 28.5, find the values of x and y.
Question 19 :
The class whose cumulative frequency is greater than (and nearest to) $\frac{n}{2}$ is called median class. TRUE OR FALSE ? (n is number of observations)
Question 20 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c1a273b230584979a77.PNG' />
A life insurance agent found the above data for distribution of ages of 100 policy holders. Calculate the median age, if policies are given only to persons having age 18 years onwards but less than 60 year.
Question 21 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c0c273b230584979a66.PNG' />
The above data gives the distribution of total monthly household expenditure of 200 families of a village. Find the modal monthly expenditure of the families.
Question 22 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c21273b230584979a7e.PNG' />
During the medical check-up of 35 students of a class, their weights were recorded as given above. Draw a less than type ogive for the given data and choose the median weight using the graph.
Question 23 :
If number of observations(n) is odd, then median equals _______ observation?
Question 24 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c07273b230584979a60.PNG' />
The table above shows the daily expenditure on food of 25 households in a locality. Find the mean daily expenditure on food by a suitable method
Question 25 : <img style='object-fit:contain' src='61b19ac1273b230584979940' />
A student noficed the number of cars passing through a spof on the road through 100 periods, each of 3 minutes and summarized it in the table above. Find the mode.
Question 26 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c0b273b230584979a65.PNG' />
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.
Question 27 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c0d273b230584979a67.PNG' />
A student noted the number of cars passing through a spot on a road for 100 periods each of 3 minutes and summarised it in the table given above. Find the mode of the data.
Question 28 : <img style='object-fit:contain' src='61b19a8d273b230584979939' />
In a retail market, fruit vendors were selling mangoes kept in packing boxes. These boxes contained varying number of mangoes. Given above iss the distribution of mango according to the number of boxes. Find the mean of mangoes kept in a packaging box. Which method of finding the mean will you choose?
Question 29 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c04273b230584979a5d.PNG' />
Consider the above distribution of daily wages of 50 workers of a factory. Find the mean daily wages of the workers of the factory by using an appropriate method.
Question 30 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c22273b230584979a7f.PNG' />
The above table gives production yield per hectare of wheat of 100 farms of a village. Change the distribution to a more than type distribution, and draw its ogive. Pick the option representing it.
Question 31 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c0f273b230584979a69.PNG' />
The above table shows the ages of the patients admitted in a hospital during a year. Find the mean of the data given above.
Question 32 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19bfb273b230584979a53.PNG' />
Find the mean of the above given data.
Question 34 : <img style='object-fit:contain' src='61b19a6b273b230584979935' />
Thirty women were examined in a hospital by a doctor and the number of heart beats per minute were recorded and summarised as above. Find the mean heart beats per minute for these women, choosing a suitable method.
Question 35 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19bfe273b230584979a56.PNG' />
The marks distribution of 30 students in a mathematics examination are given above. Find the mode of this data.
Question 36 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c0a273b230584979a64.PNG' />
Thirty women were examined in a hospital by a doctor and the number of heartbeats per minute were recorded and summarised as given above. Find the mean heartbeats per minute for these women, choosing a suitable method.
Question 37 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19bfb273b230584979a52.PNG' />
The distribution above shows the number of wickets taken by bowlers in one-day cricket matches. Find the mean number of wickets.
Question 38 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c1a273b230584979a76.PNG' />
100 surnames were randomly picked up from a local telephone directory and the frequency distribution of the number of letters in the English alphabets in the surnames was obtained as given above. Determine the mode number of letters in the surnames.
Question 40 : <img style='object-fit:contain' src='61b19ae3273b230584979944' />
If median of the distribution given below is 28.5, then find the values of x and y.
Question 41 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19bfc273b230584979a54.PNG' />
The marks obtained by 30 students of Class X of a certain school in a Mathematics paper consisting of 100 marks are presented in table above. Find the mean of the marks obtained by the students
Question 42 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c10273b230584979a6b.PNG' />
The above distribution gives the state-wise teacher-student ratio in higher secondary schools of India. Find the mean of this data.
Question 44 :
For finding the median of ungrouped data, we first arrange the data values of the observations in ascending order. TRUE OR FALSE?
Question 45 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c1b273b230584979a78.PNG' />
The lengths of 40 leaves of a plant are measured correct to the nearest millimetre, and the data obtained is represented in the above table. Find the median length of the leaves
Question 46 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c0e273b230584979a68.PNG' />
The above data gives the information on the observed lifetimes (in hours) of 225 electrical components. Determine the modal lifetimes of the components.
Question 47 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19bff273b230584979a57.PNG' />
A survey conducted on 20 households in a locality by a group of students resulted in the above frequency table for the number of family members in a household. Find the mode of this data.
Question 48 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19ab8273b23058497993e.PNG' />
The above given distribution shows the number of runs scored by some top batsmen of the world in one-day inetrnational cricket matches. Find the mode.
Question 49 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c05273b230584979a5e.PNG' />
The above table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.
Question 50 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c03273b230584979a5b.PNG' />
Find median for the above given data.
