Seventeen candidates appeared in an examination. The marks of the candidates who failed in the examination are 10, 9, 6, 7, 8, 8, 7, 5, 4, 6. The median of marks of all seventeen candidates is

In an examination, the distribution of marks obtained by 30 students is given in the following table: Marks: 10–25 | 25–40 | 40–55 | 55–70 | 70–85 | 85–100 No. of Students: 2 | 3 | 7 | 6 | 6 | 6 The…

What is the median of all possible factors of 120 ?

The median of the following distribution is 28.5, the values of x and y are respectively Class Interval: 0–10 | 10–20 | 20–30 | 30–40 | 40–50 | 50–60 Frequency: 5 | x | 20 | 15 | y | 5 where the tota…

The mean and standard deviation of 100 observations are 25 and 9 respectively. If 6 is subtracted from each observation, then mean and standard deviation will respectively be

Average marks in Mathematics of Section A comprising 30 students is 65 and that of Section B comprising 35 students is 70. What are the average marks (approximately) of both the sections if it was de…