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Q) A survey regarding heights (in cm) of 51 girls of class X of a school was conducted and the following data was obtained: Find the median height of girls. If mode of the above distribution is 148.05, find the mean using empirical formula. Q35 B – Sample Question Paper – Set 1 – Maths […]
statistics
Q) Medical check-up was carried out for 35 students of a class and their weights were recorded as follows: Find the difference between the mean weight and the median weight. PYQ: 35 – CBSE 2025 – Code 30 – Series 5 – Set 1 Ans: Step 1: Mean weight value of data: To calculate the
Q) Using step-deviation method, find mean for the following frequency distribution: ICSE Specimen Question Paper (SQP)2025 Ans: Step 1: Let’s re-organize the data in the table: Step 2: Here we have = 30, = – 12, a = 52.5, h = 15 Given that the total of frequencies = 40 ∴ Mean = a + x
Using step-deviation method, find mean for the following frequency distribution: Read More »
Q) The table given below shows the runs scored by a cricket team during the overs of a match. Estimate the modal runs scored. ICSE Specimen Question Paper (SQP)2025 Ans: Since the modal class is the class with the highest frequency. In the given question, class “50 – 650” has 60 frequency which is the
Q) The COVID-19 pandemic, also known as coronavirus pandemic, is an ongoing pandemic of coronavirus disease caused by the transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) among humans. The following tables shows the age distribution of case admitted during a day in two different hospitals Refer to table 1 1. The average age for
Q) Literacy rates of 40 cities are given in the following table. It is given that mean literacy rate is 63.5, then find the missing frequencies x and y. Ans: Step 1: Let’s re-organize the data in the frequency table to find out each part: Step 2: Given that the total of frequencies = 40
Q) If the median of the following frequency distribution is 32.5. Find the values of f1 and f2 . Ans: Step 1: Let’s re-organize the data in the frequency table to find out each part: Step 2: Given that the total of frequencies = 40 ∴ 31 + f1 + f2 = 40 ∴ f1
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 »