A gasoline station has recorded the given below data for liters of diesel sold per vehicle in a sample of 660 vehicles as shown in Table 1: Table 1. Liters of diesel sold per vehicle diesel Sold (Liters) 0-4 5-9 10-14 15-19 20-24 25-29 Number of Vehicles 64 192 270 105 23 6 Compute the following: The eighth decile, D_8 Mean, Median and Mode.
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.
A gasoline station has recorded the given below data for liters of diesel sold per vehicle in a sample of 660 vehicles as shown in Table 1:
Table 1. Liters of diesel sold per vehicle
diesel Sold (Liters) 0-4 5-9 10-14 15-19 20-24 25-29
Number of Vehicles 64 192 270 105 23 6
Compute the following:
The eighth decile, D_8
Mean,
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