Standard Deviation tells you how spread out the set of scores are with respects to the mean. It measures the variability of the data. A small standard deviation implies that the data is close to the mean/average (+ or - a small range); the larger the standard deviation the more dispersed the data is from the mean.
Standard deviation is the square root of the mean. The mean for this set is (2 + 4 + 3 + 7)/4 = 16/4 = 4; the square root of this is 2.
Standard deviation has the same unit as the data set unit.
Standard deviation is the square root of the variance. Since you stated the variance is 4, the standard deviation is 2.
1.10
Yes, the variance of a data set is the square of the standard deviation (sigma) of the set. This means that the variance is always a positive number, even though the data might have a negative sigma value.
5
This would increase the mean by 6 points but would not change the standard deviation.
Standard deviation is the square root of the mean. The mean for this set is (2 + 4 + 3 + 7)/4 = 16/4 = 4; the square root of this is 2.
Standard deviation has the same unit as the data set unit.
A single number, such as 478912, always has a standard deviation of 0.
Standard deviation is a measure of variation from the mean of a data set. 1 standard deviation from the mean (which is usually + and - from mean) contains 68% of the data.
Yes it does. The center, which is the mean, affects the standard deviation in a potisive way. The higher the mean is, the bigger the standard deviation.
Deviation, actually called "standard deviation" is, in a set of numbers, the average distance a number in that set is away from the mean, or average, number.
Standard deviation is a measure of how spread out a set of numbers are from each other. It has a variety of uses in statistics.
A single number, such as 478912, always has a standard deviation of 0.
Standard deviation is the square root of the variance. Since you stated the variance is 4, the standard deviation is 2.
The standard deviation of a single number, as in this question, is 0.