0
What else can I help you with?
Is variance square of standard deviation?
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.
Can the variance be a negative number?
First, we compute the variance by taking the sum of squares and divide that by N which is the number of data points in the same. It is average squared deviation of each number from its mean. The point is a squared number is always positive and N is always positive so the variance must always be non-negative. ( It can be 0). The variance is a measure of the dispersion of a set of data points around their mean value. It would not make sense for it to be negative.
Which value is NOT always a number in the data set it represents?
The range, median, mean, variance, standard deviation, absolute deviation, skewness, kurtosis, percentiles, quartiles, inter-quartile range - take your pick. It would have been simpler to ask which value IS in the data set!
Given that the variance for a data set is 1.20 what is the standard deviation?
1.10
Show how the data set as a whole is spread around the mean?
I think the answer is variance
Is variance square of standard deviation?
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.
What value shows how the data set as a whole is spread around the mean?
variance
Can the variance be a negative number?
First, we compute the variance by taking the sum of squares and divide that by N which is the number of data points in the same. It is average squared deviation of each number from its mean. The point is a squared number is always positive and N is always positive so the variance must always be non-negative. ( It can be 0). The variance is a measure of the dispersion of a set of data points around their mean value. It would not make sense for it to be negative.
How do you get a variance?
To calculate variance, first find the mean (average) of your data set. Then, subtract the mean from each data point and square the result to eliminate negative values. Next, sum these squared differences and divide by the number of data points (for population variance) or by the number of data points minus one (for sample variance). This final result is the variance, which measures the spread of the data points around the mean.
What is the variance with sample data set 9 14 19 16 8 6 17 11 18?
The variance of this data set is 22.611
What is the variance of this data set 10 8 8 6 5?
The variance is: 3.8
What is a measure of the spread of a set of data?
The standard deviation is the value most used. Others are variance, interquartile range, or range.
The mean is 10 What is the variance of the data set 4 9 9 13?
The variance is 13.5833
Is the standard deviation of the data values in a sample is 17 what is the variance of the data values?
The variance of a set of data values is the square of the standard deviation. If the standard deviation is 17, the variance can be calculated as (17^2), which equals 289. Therefore, the variance of the data values in the sample is 289.
What is varience?
In statistics, variance measures how far apart a set of numbers is spread out. If the numbers are identical, the variance is zero. Variance can never be negative.
Which value is NOT always a number in the data set it represents?
The range, median, mean, variance, standard deviation, absolute deviation, skewness, kurtosis, percentiles, quartiles, inter-quartile range - take your pick. It would have been simpler to ask which value IS in the data set!
If the r-value or correlation coefficient of a data set is negative the coefficient of determination is negative?
The coefficient of determination, denoted as (R^2), is always a non-negative value, regardless of whether the correlation coefficient (r-value) is negative or positive. The value of (R^2) indicates the proportion of the variance in the dependent variable that can be explained by the independent variable(s). While a negative r-value signifies an inverse relationship between the variables, (R^2) will still be a positive number, ranging from 0 to 1. Thus, a negative r-value does not imply a negative coefficient of determination.
