The mean of 20 observations is 6.21 . Ltaer on it was discovered that two items +5 and +3 were taken as -5 amd -3 . Find the correct mean?
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pehle to 5 and 3 mean mein add karna tha to add karne ki jagah subtract kar Diya
aisa soch ke dekho agar 5 and 3 mean mein add karna hi bhul jaate to bas ek baar add karne se sahi ho jaata par 5 aur 3 ke negative value add karne ke karan unhe do do baar add karna padega
thoda samajne mein mushqil hai but try karna
aisa soch ke dekho agar 5 and 3 mean mein add karna hi bhul jaate to bas ek baar add karne se sahi ho jaata par 5 aur 3 ke negative value add karne ke karan unhe do do baar add karna padega
thoda samajne mein mushqil hai but try karna
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