ask your mom they know more than u
It means that particular observation is close to the population [or sample] mean.
You cannot. If you are told the standard deviation of a variable there is no way to tell whether that was derived from grouped or ungrouped data.
The smaller the standard deviation, the closer together the data is. A standard deviation of 0 tells you that every number is the same.
How widely spread out, or tightly concentrated about the mean it is.
Standard deviation measures the amount of variation or dispersion in a set of values. A low standard deviation indicates that the values tend to be close to the mean, suggesting consistency in the measurements, while a high standard deviation signifies that the values are spread out over a wider range, indicating greater variability. It provides insight into the reliability and consistency of the data, helping to assess the degree of uncertainty associated with the measurements.
i dont know...... it means
It is a measure of the spread or dispersion of the data.
It means that particular observation is close to the population [or sample] mean.
it tells you
The mean and standard deviation often go together because they both describe different but complementary things about a distribution of data. The mean can tell you where the center of the distribution is and the standard deviation can tell you how much the data is spread around the mean.
1.41
You cannot. If you are told the standard deviation of a variable there is no way to tell whether that was derived from grouped or ungrouped data.
The mean deviation is a measure of dispersion that calculates the average absolute difference between each data point and the mean. One advantage of mean deviation is that it considers every data point in the calculation, providing a more balanced representation of the data spread. However, a disadvantage is that it can be sensitive to outliers, as it does not square the differences like the variance does in standard deviation, making it less robust in the presence of extreme values.
The standard deviation tells us nothing about the mean.
The smaller the standard deviation, the closer together the data is. A standard deviation of 0 tells you that every number is the same.
It tells you how much variability there is in the data. A small standard deviation (SD) shows that the data are all very close to the mean whereas a large SD indicates a lot of variability around the mean. Of course, the variability, as measured by the SD, can be reduced simply by using a larger measurement scale!
standard deviation is the square roots of variance, a measure of spread or variability of data . it is given by (variance)^1/2