The range of the correlation coefficient is?
The correlation coefficient, denoted by r, is a measure of the strength of the straight-line or linear relationship between two variables. The correlation coefficient assumes any value in the interval between +1 and −1, including the end values +1 or −1.
Karan, Arjun and Krunal alone can complete a work in 35, 70 and 60 days respectively. All of them started working together but after 3 days from start K...
Amit and Binod receive Rs.1400 for work of 7 days. If Amit is 4 times efficient than Binod, then find the daily wage received by Binod.
Three men and 4 women can do a piece of work in 7 days, whereas 2 men and I woman can do it in 14 days. Seven women will complete the same work in:
‘A’ alone can do some work in 10 days. ‘B’ and ‘C’ together can do the same work in 12 days. If ‘B’ is half as efficient as ‘A’, the...
A, B and C alone can complete a work in 30, 60 and 45 days respectively. All of them started working together but after 3 days from start A left the job...
‘A’ and ‘B’ can do a piece of work in 17 days and 34 days, respectively. They started working together but ‘A’ left after 4 days. Find the t...
‘A’ alone can do some work in 14 days. ‘B’ and ‘C’ together can do the same work in 12 days. If ‘B’ is half as efficient as ‘A’, the...
Krishna can do a piece of work in 25 days. He alone worked at it for 10 days and then Balram completed alone the rest work in 20 days. In how many days,...
X, Y and Z can do a piece of work in 90 days, 40 days and 120 days respectively. If they all work together alternatively starting with X, Y than Z respe...
‘A’ can do a piece of work in 15 days. ‘B’ can do 80% of the same work in 20 days. If they work together for the entire time and get paid Rs.140...
