It determines the location of the graph: left or right - but not its shape.
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A normal distribution is symmetrical; the mean, median and mode are all the same, on the line of symmetry (middle) of the graph.
A normal distribution is symmetric and when looked at on a graph, the graph looks like a bell shaped curve. Approximately 95 percent of its values should lie within two standard deviations of the mean. Frequency of the data lies mostly in the middle of the curve.
le standard normal distribution is a normal distribution who has mean 0 and variance 1
The standard normal distribution is a normal distribution with mean 0 and variance 1.
The normal distribution would be a standard normal distribution if it had a mean of 0 and standard deviation of 1.