Q) The following distribution shows the daily pocket allowance of children of a locality. The mean daily pocket allowance is < 36.10. Find the missing frequency, f. Ans: Let’s re-arrange the data with midpoint of each class, frequency, and multiply midpoint with frequency: We know that the mean value of a grouped data is given […]
The following distribution shows the daily pocket allowance of children of a locality. Read More »
Q) The following table shows the ages of the patients admitted in a hospital during a year: Find the mode and mean of the data given above. Ans: (i) Mode value of the data: Since the modal class is the class with the highest frequency. In the given question, class “35 – 45” has 23
Q) Activities like running or cycling reduce stress and the risk of mental disorders like depression. Running helps build endurance. Children develop stronger bones and muscles and are less prone to gain weight. The physical education teacher of a school has decided to conduct an interschool running tournament in his school premises. The time taken by
Activities like running or cycling reduce stress and the risk of mental disorders Read More »
Q) The monthly expenditure on milk in 200 families of a Housing Society is given below: Find the value of x and also find the mean expenditure Ans: (i) Value of X: To calculate the value of X, we first sum up all the frequencies: Here, from 2nd column, we get total number of families
The monthly expenditure on milk in 200 families of a Housing Society is Read More »
Q) Find the mean and median of the following data: Ans: (i) Mean Value of data: To calculate the mean value, let’s re-organize the data: To arrange the above, we take following steps: We calculate midpoint ‘x’of each class by Then we calculate ‘fx’ by multiplying midpoint of each class with frequency of that class
Find the mean and median of the following data: Read More »
Q) Vocational training complements traditional education by providing practical skills and hands-on experience. While education equips individuals with a broad knowledge base, vocational training focuses on job-specific skills, enhancing employability thus making the student self reliant. Keeping this in view, a teacher made the following table giving the frequency distribution of students/adults undergoing vocational training
Vocational training complements traditional education by providing practical skills Read More »
Q) A survey regarding the heights (in cm) of 50 girls of class X of a school was conducted and the following data was obtained : Find the mean and mode of the above data. Ans: 1. Mean value of the data: Let’s re-arrange the data with midpoint of each class, frequency, and multiply midpoint with frequency:
Q) Calculate the mean of the following data : Ans: Let’s re-arrange the data with midpoint of each class, frequency, and multiply midpoint with frequency: We know that, mean of grouped data is given by: Mean of grouped data = Therefore, Mean value = = 24 Hence, the mean value of the given data is
In a test, the marks obtained by 100 students (out of 50) are given below : Read More »
Q) Calculate the mean of the following data : Ans: Let’s re-arrange the data with midpoint of each class, frequency, and multiply midpoint with frequency: We know that, mean of grouped data is given by: Mean of grouped data = Therefore, Mean value = = 10.57 Hence, the mean value of the given data is
Calculate the mean of the following data : Read More »
Q) Student-teacher ratio expresses the relationship between the number of students enrolled in a school and the number of teachers employed by the school. This ratio is important for a number of reasons. It can be used as a tool to measure teachers’ workload as well as the allocation of resources. A survey was conducted