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Is the interquartile range or IQR is found by subtracting the mean from the maximum value of a data set?
No. The IQR is found by finding the lower quartile, then the upper quartile. You then minus the lower quartile value from the upper quartile value (hence "interquartile"). This gives you the IQR.
What word tells the value found by subtracting the mean and dividing by the standard deviation?
z score
Why does adding or subtracting a constant amount to each value in a data set increase the mean?
The adding and subtracting a constant amount means the value will go up. The amount will go up due to the amount been added to each number.
What does average mean in math form?
Average - the central tendency of a data set is a measure of the "middle" or "expected" value of the data set (mean, median, mode) Layman's terms - the average of a math problem is the middle number, usually found by taking the highest number and subtracting the lowest number, or taking the highest and lowest numbers and finding the middle number.
How does subtracting the same amount from each value in a data set affect the mean median mode and range?
The mean, the median, the mode and the upper and lower limits of the range would each be reduced by the amount subtracted.
