For a given frequency distribution, the mean is and the median is . Using the empirical relationship between the measures of central tendency, find the mode of the distribution.
Answer
B) 34
The correct answer is B) 34 — Calculate the value: .
Step-by-step solution
- Recall the empirical formula relating mean, median, and mode: .
- Substitute the given values into the formula: and .
- Calculate the value: .
Common mistake: Confusing the coefficient factors in the formula and writing or adding instead of subtracting.
Concept tested: Empirical relation between measures of central tendency
Published · How this solution was prepared and checked
Related questions
- 1 The median of the following frequency distribution is 525. Find the values of missing frequencies x and y, if the total frequency is 100. Class interval | Frequency 0–100 | 2 100–200 | 5 200–300 | x 300–400 | 12 400–500 | 17 500–600 | 20 600–700 | y 700–800 | 9 800–900 | 7 900–1000 | 4
- 2 Find the mean daily wages of 50 workers in a factory using the assumed mean method for the following data: Daily Wages (in ₹): 500–520, 520–540, 540–560, 560–580, 580–600 Number of workers: 12, 14, 8, 6, 10
- 3 In a circle with centre O, a chord AB subtends an angle of 80° at the centre. A tangent at B meets the extension of AB at T. Find the measure of ∠ ATB.
- 4 BL and CM are medians of a triangle ABC right-angled at A. Prove that 4(BL^2 + CM^2) = 5BC^2.
- 5 In a class of 30 students, 14 like mathematics, 12 like physics, and 5 like both subjects. A student is selected at random. Find the probability that the student likes mathematics given that the student likes physics.
- 6 In a circle of radius 10 cm, a chord subtends a central angle of 80°. Find the length of the chord. Give your answer correct to two decimal places.