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What is A number that tells the typical value of data in a set called?
Average is the number that tells the typical value of data in a set.
Which measures of central location always have only one value for a set of grouped or ungrouped data?
Mean and median are the measures of central location that always have one value. This is true for a set of grouped or ungrouped data.
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.
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 does mode tell you in data?
The value that occurs the most number of times.
Is a mode a value not always a number in the data set it represents?
The mode, I think is not always a number in the data set it represents, for example I have a set of numbers, 1,7,2,4,6. You'll put them in order; 1,2,4,6,7. And there is no number that is the mode. So, I believe that is correct.
What is a data marker...?
Represents value data in graphical data
The of a data bar represents the value in a cell.?
The length of a data bar represents the value in a cell. The longer the data bar, the higher the value in the cell it is associated with.
Is it true that the median is always one of the data points in a set of data?
No, it is not necessarily true that the median is always one of the data points in a set of data. The median is found by arranging the data in numerical order and selecting the middle value. This value might be one of the data points, but it could also be the average of two data points if there is an even number of values in the set.
Will the median always be equal to an actual value in the data set?
No. Not if there are an even number of observations and the middle two values are unequal.
What is A number that tells the typical value of data in a set called?
Average is the number that tells the typical value of data in a set.
How do you calculate average value?
(sum of data)/number of data
What data represents any data that has a number or a rating assigned to it in order to measure performance or needs to be tabulated?
A. Quantitative
Since the median is the middle value of a data set it must always be?
Not an extreme value.
Which measure of central tendency represents the middle number in a set of data?
The median.
What number system represents numeric data as a series of 0s and 1s?
Binary.
In a data set the number of observations will always be the same as the number of what?
elements
