Web In a class test, marks obtained by 120 students are given in the following frequency distribution. If it is given that mean is 59, find the missing frequencies x and y. Marks No. of students 0 − 10 1 10 − 20 3 20 − 30 7 30 − 40 10 40 − 50 15 50 − 60 x 60 − 70 9 70 − 80 27 80 − 90 18 90 − 100 y WebTotal marks obtained by 8 students in class test = (12 + 14 + 16 + 18 + 20 + 10 + 11 + 19) = 120 Using the mean formula, Mean = (Sum of Observation) ÷ (Total numbers of Observations) = 120/8 = 15 Therefore, the mean of marks obtained by 8 students is 15.

Solved 01 The marks obtained out of 25 by 20 students of a - Chegg

WebIn the formula x = a + h (fiui/fi), for finding the mean of grouped frequency distribution, ui = (A) (xi+a)/h (B) h (xi – a) (C) (xi –a)/h (D) (a – xi)/h Solution: (C) (xi –a)/h Explanation: According to the question, x = a + h (fiui/fi), Above formula is a step deviation formula. In the above formula, x i is data values, a is assumed mean, WebApr 14, 2024 · Introduction Reasons for drug shortages are multi-factorial, and patients are greatly injured. So we needed to reduce the frequency and risk of drug shortages in hospitals. At present, the risk of drug shortages in medical institutions rarely used prediction models. To this end, we attempted to proactively predict the risk of drug shortages in … chipset driver amd download

Solved Marks obtained by male students in a class is - Chegg

WebDec 10, 2024 · Solution For In a class test, marks obtained by 120 students are given in the following frequency distribution. If it is given that mean is 59 , then In a class test, marks … WebUse Graph Paper for this Question. the Marks Obtained by 120 Students in an English Test Are Given Below : Draw the Ogive and Hence, Estimate: (I) the Median Marks. 0 CISCE ICSE Class 10 WebHere the average marks of 120 candidates are 35. The average marks of passed candidates are 39. The average marks of failed candidates are 15. Concept Used: Input = Output. … grapevine window valance