Math, asked by umrahjamali111, 21 hours ago

Three series with equal terms and equal mean have SD's 6,7,8 . Find combined SD.​

Answers

Answered by sanjaakash2008
3

Answer:

Two sample of size 100 and 150 respectively have means 15 and 16 and standard deviations 3 and 4 respectively. Find the combined mean and standard deviation of Size 250.

Previous Question
Next Question
Similar questions
Economy, 11 hours ago
Which of the following statements is true? (a) AR= (b) TR= MR x Q (c) TR = ∑MR (d) All...
Math, 11 hours ago
value of sin square 5+cos square 5​...
Social Sciences, 11 hours ago
who was the king of magadha after the death of ajatshatru?​
English, 21 hours ago
Complete the sentence. Do you think he (a) Understands o Understanding what I said? (b) Understood d) Understand​...
English, 21 hours ago
ayu ek request h, jisme brainlist diya h uska answer edit kro​...
Math, 8 months ago
(b) 0.439 x 5.6 = 43.9 x 0.056​...
Biology, 8 months ago
Classify the following features of phleom and xylem...
English, 8 months ago
What helped michael in striving for perfection...