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Q: What does it mean to say that data point has a residual of one?

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The point lies one unit below the regression line.

The data point is close to the expected value.

Because, if there is an even number of results in the set of data, the mean must be calculated by finding the half-way point between the two central numbers.

Standard deviation is a measure of variation from the mean of a data set. 1 standard deviation from the mean (which is usually + and - from mean) contains 68% of the data.

The mean of a set of data is the sum of all those data values, divided by the numbers of values in the set. For instance, if we had 1, 3 and 5, the mean would be (1+3+5)/3 = 3. The mean doesn't always have to be one of the data points in the set. For instance, if we had the data 1, 6, 7, 7, 8. The mean would be (1+6+7+7+8)/5 = 5.8, even though 5.8 isn't one of the values in the set.

Related questions

The point lies one unit below the regression line.

The point lies one unit above the regression line.

The data point is close to the expected value.

With just one data point, the mean, median and mode are all the same as the data point itself. In this case, 14.

Let's say that you fit a simple regression line y = mx + b to a set of (x,y) data points. In a typical research situation the regression line will not touch all of the points; it might not touch any of them. The vertical difference between the y-co-ordinate of one of the data points and the y value of the regression line for the x-co-ordinate of that data point is called a residual.There will be one residual for each data point.To see some labelled diagrams of residuals search images.google.com for residuals.

No. But there can be more than one data point which has the same value as the mean for the set of numbers. Or there can be none that take the mean value.

Residual deficits is a term used in the medical field. It refers to leftover issues that occur due to a condition. For example, after a stroke, one may have residual deficits that prohibit certain movements.

If you are talking about the z-value of a point on the normal curve, then no, it is 1.5 standard deviations BELOW the mean.

No. Here's one set of data where the mean is not one of the values: a set of 250,000 numbers. 125,000 of them are "1", 125,000 are "3". The mean of this data set is "2", which is not among the data.

whats does one point perspective mean

Because, if there is an even number of results in the set of data, the mean must be calculated by finding the half-way point between the two central numbers.

Point-to-point transmission

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