Std 8 gujarati ch 10 adhi ana/ standard 8 gujarati ch 10 swadhyay / dhoran 8 gujarati path 10

Find the variance and standard deviation of the scores 7 , 8 , 9 , 10 and 16.

The standard deviation of data 6,5,9,13,12,8 and 10 is

Two clocks A and B being tested against a standard clock located in the national laboratory At 10.00 AM by the standard clock, the readings of the two clocks are shown in following table {:("Day","Clock A","Clock B"),(I^("st"),10:00:06,8:15:00),(II^("nd"),10:01:13,8:15:0.1),(III^("rd"),9:59:0.8,8:15:04),(IV^("th"),10:02:15,8:14:58),(V^("th"),9:58:10,8:15:02):} If you are doing an experiment that requires precision time interval measurements, which of the two clocks will you prefer ?

Find the mean, variance and the standard deviation for the following data : 5,9,8,12,6,10,6,8

What is the potential at the centre of a square of each side 1.0 meter, when four charges +1xx10^(-8)C, -2xx10^(-8) C, +3xx10^(-8)C and +2xx10^(-8)C are placed at the four corners of the square.

Determine the greatest 3 -digit number exactly divisible by 8,10 and 12. and 6,8 and 10

A grocer buys eggs at 10 for Rs8 and sells at 8 for Rs 10. Find his again or loss percent.

What is the pH of 7.0 xx 10^(-8)M acetic acid. What is the concentration of un-ionsed acetic acid. K_(a) of CH_(3)COOH = 1.8 xx 10^(-5) .