Weights of statistics students were obtained by a teacher as part of an experiment conducted for the class. The last digit of those weights are listed below. Construct a frequency distribution with 10 classes. Based on the distribution, do the weights appear to be reported or actually measured? What can be said about the accuracy of the results? 0 0 0 0 0 0 0 0 1 1 2 2 3 4 4 5 5 5 5 5 5 5 5 5 5 5 6 8 8 8 9 Complete the frequency distribution below. Last digit Frequency Last digit Frequency 0 5 1 6 2 7 3 8 4 9 Based on the distribution, do the weights appear to be reported or actually measured? A. The weights appear to be reported because the distribution is uniform. B. The weights appear to be actually measured because the distribution is uniform. C. The weights appear to be actually measured because there are disproportionately more 0s and 5s. D. The weights appear to be reported because there are disproportionately more 0s and 5s. What can be said about the accuracy of the results? A. They are likely accurate because they appear to be accurately measured. B. They are likely accurate because they appear to be reported. C. They are likely not very accurate because they appear to be reported. D. They are likely not very accurate because they appear to be actually measured.
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.
Last digit | Frequency | Last digit | Frequency |
0 | 5 | ||
1 | 6 | ||
2 | 7 | ||
3 | 8 | ||
4 | 9 |
appear to be reported or actually measured?
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