Down-To-Earth sells houses. The following table represents the selling price of a house (y) in thousands of rands and the number of houses sold at that price (x): x 5 15 19 7 y 500 900 1500 2 000 The standard deviation for the number of houses sold is [1] 6,6. [2] 4,0. [3] 11,5. [4] 5,7. [5] none of the above.
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Down-To-Earth sells houses. The following table represents the selling price of a house (y) in thousands of rands and the number of houses sold at that price (x):
x 5 15 19 7
y 500 900 1500 2 000
The standard deviation for the number of houses sold is
[1] 6,6.
[2] 4,0.
[3] 11,5.
[4] 5,7.
[5] none of the above.
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