Identify the level of measurement of the data, and explain what is wrong with the given calculation. In a survey, the political parties of respondents are identified as 0 for a Democrat, 1 for a Republican, 2 for a Libertarian, and 3 for anything else. The average (mean) is calculated for 721 respondents and the result is 1.1. The data are at the V level of measurement. What is wrong with the given calculation? O A. The true average (mean) is 1.3. O B. Such data are not counts or measures of anything, so the average (mean) needs to be computed in a different way. O C. Such data are not counts or measures of anything, so it makes no sense to compute their average (mean). O D. There is nothing wrong with the given calculation.
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.
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