Formula for standard deviation sample calculation is:
SD = sqrt (( ∑( x - m)²) / ( n - 1 )),
where x stays for each value in the data set, m stays for mean of all values in the data set, and n stays for the number of values in the data set.
For example: Find the sample standard deviation for the set of numbers: 10, 11, 11, 12, 12.
First we will find mean of all avlues: m = ( 10 + 11 + 11 + 12 +12 ) / 5 = 11.2
SD = sqrt (( 1.2² + 0.2² + 0.2² + 0.8² + 0.8² ) / ( 5 - 1 ))=
= sqrt ( 2.8 / 4 ) = √0.7 = 0.837
If is an integer (a whole number), then the expression represents an even number, because even numbers are the multiples of 2. The expressions 2 n − 1 and 2 n + 1 can represent odd numbers, as an odd number is one less, or one more than an even number.
Answer:72 is the correct answer
Step-by-step explanation:I think the answer is 72
29,000 kph x 24 hours = 696,000 kilometers
696,000 km = 6,960,000 hectometers
Answer: 27
Step-by-step explanation: Every triangle has 180 degrees, if you add 3+10+7 you get 20, the ratio total is 20 and the total degrees is 180, divide 180 by 20 and you get 9, 9 x 3 (3 is the smallest of the ratios) = 27 degrees.
