jee-main 2023 Q71

jee-main · India · session2_13apr_shift1 Measures of Location and Spread
The mean and variance of 10 observations were calculated as 15 and 15 respectively by a student who took by mistake 25 instead of 15 for one observation. Then the correct mean and variance are
(1) 14 and 13.5
(2) 14 and 12.5
(3) 15 and 14.5
(4) 14 and 11.5 
The mean and variance of 10 observations were calculated as 15 and 15 respectively by a student who took by mistake 25 instead of 15 for one observation. Then the correct mean and variance are\\
(1) 14 and 13.5\\
(2) 14 and 12.5\\
(3) 15 and 14.5\\
(4) 14 and 11.5
Paper Questions
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q10 Q14 Q18 Q19 Q21 Q24 Q26 Q61 Q62 Q63 Q64 Q65 Q66 Q67 Q68 Q69 Q70 Q71 Q72 Q73 Q74 Q75 Q76 Q77 Q78 Q79 Q80