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Chapter 14 Class 10 Statistics
Example 3 Important
Example 4 Important
Example 6 Important
Example 7 Important
Example 8
Question 1 Important Deleted for CBSE Board 2024 Exams
Ex 13.1, 3 Important You are here
Ex 13.3, 4 Important
Ex 13.3, 6 Important
Question 1 Deleted for CBSE Board 2024 Exams
Question 2 Important Deleted for CBSE Board 2024 Exams
Question 3 Deleted for CBSE Board 2024 Exams
Chapter 14 Class 10 Statistics
Last updated at Aug. 11, 2023 by Teachoo
Ex 13.1, 3 The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is Rs.18. Find the missing frequency f. Mean(𝑥 ̅) = a + (∑▒𝒇𝒊𝒅𝒊)/(∑▒𝒇𝒊) Where a = Assumed Mean h = Class interval Putting values in formula Mean = 18 + (2𝑓 − 40)/(44 + 𝑓) 18 = 18 + (2𝑓 − 40)/(44 + 𝑓) 18 − 18 = (2𝑓 − 40)/(44 + 𝑓) 0 = (2𝑓 − 40)/(44 + 𝑓) 0 = 2𝑓−40 2𝑓=40 f = 40/2 f = 20