The weights (in kg.) of 15 students of a class are: 38, 42, 35, 37, 45, 50, 32, 43, 43, 40, 36, 38, 43, 38, 47 (i) Find the mode and median of this data. (ii) Is there more than one mode?
1 Answers
A profit of Rs. 300 is made on class I ticket , and Rs. 800 is made on class II ticket. If x and y are the number of tickets of class I and class II s
Correct Answer - f=300x+800y
2 Answers 1 views
A class has `175` students, The following description gives the number of students studying one or more of the subjects in this class, Mathematics `10
Correct Answer - (i) 60,35,13, (ii) 32
2 Answers 1 views
The mean weight of 25 students of a class is 52 kg. if the mean weight of the first 13 student of the class is 48 kg and that of the last 13 students
Correct Answer - 39 kg
2 Answers 1 views
The heights (in cm) of 9 students of a class are 148,144,152,155,160,147,150,149,145. find the median height.
Correct Answer - 147 cm
2 Answers 1 views
Following is the distribution of the long jump competition in which 250 students participated. Find the median distance jumped by the students.
Distance (in m) 0 - 1 1 – 2 2 - 3 3 - 4 4 - 5 Number of Students 40 80 62 38 30 cf 40 120 182 220 250 \(\frac{n}{2}=\frac{250}{2}\) = 125 ⇒ median class is 2 - 3, l = 2, h = 1, cf =...
2 Answers 1 views
In a class there are 20 boys and the remaining students are girls. The mean weights of the total 50 students is 23 kg.
Total weight of girls and boys = Mean x no. of students = 23 x 50 = 1150 Weight of boys = Mean of boys x no. of boys = 30 x 20...
2 Answers 1 views
While doing a project work on weights of students in the class-room Sekhar found mean of the class as 28 kg, median as 29.5 kg and mode as 27 kg.
C) 27.5, 28.5
2 Answers 3 views
In a senior secondary school,80 students play football or hockey.The number that play football is 5 more than twice the number that play hockey.If 15 students play both games and every student in the school plays at least one game,find (i)the number of students that play football (ii)the number of students that play football but not hockey (iii)the number of students that play hockey but not football.
I thought F or H = 80 is giving by n(F u H) = n(F) + n(H) - n(F n H)
2 Answers 8 views
If 1 kg body weights 1.2 N and 2 kg body weights 2.4 N on a planet. Then the acceleration due to gravity on that planet is
Correct option is D) 1.2 m/s2
2 Answers 1 views