Wiki User
∙ 15y agoa line of best fit, on a graph you draw the line where it is closest to most points and measure how far it is away from the line.
http://www.bbc.co.uk/schools/gcsebitesize/maths/images/graph_53.gif
Wiki User
∙ 15y agoThe "z-score" is derived by subtracting the population mean from the measurement and dividing by the population standard deviation. It measures how many standard deviations the measurement is above or below the mean. If the population mean and standard deviation are unknown the "t-distribution" can be used instead using the sample mean and sample deviation.
Z-Score.
You measure a great number of them, keeping records of every measurement, and then you calculate the average of all of the measurements.
The mean is an average so, just add all the items you are trying to find the mean for and then divide by the number of items. Example 1+2+3= 6/3=2. 2 is the mean
I quess it should be what is a smoot not what does it mean. It is a unit of measurement.
Deviation
The "z-score" is derived by subtracting the population mean from the measurement and dividing by the population standard deviation. It measures how many standard deviations the measurement is above or below the mean. If the population mean and standard deviation are unknown the "t-distribution" can be used instead using the sample mean and sample deviation.
Deviation and absolute deviation are two other measures.
Z-Score tells how many standard deviations a measurement is away from the mean.
gives a standardized unit that tells how far away each measurement is from the mean
The answer depends on the individual measurement in question as well as the mean and standard deviation of the data set.
z score
Standard deviation is a measure of the spread of data around the mean. The standardized value or z-score, tells how many standard deviations the measurement is away from the mean, and in which direction.z score = (observation - mean) / standard deviationStandard deviation is the unit measurement. This tells what the value a decimal is.
z score
z-score
Z-Score.
the Z score, or standard score.