stion 13 (à Find the mean and median yield stress. (Enter the mean to two decimal places and the median to one decimel ale Note: If you are using CrunchIt, you may adjust the default precision under Preferences. See the instructional videa ae how to adjust precision settings.
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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khe mnan and median yield stress. (Enter the mean to two decimal places and the median to one decimal placa )
Note: If you are using CrunchIt, you may adjust the default precision under Preferences. Sce the instructionalit o
Drltempts
how to adjust precision settings.
M =
Compare these two values. Referring to your plot, what general fact does your comparison illustrate?
O The large outlier, as seen in the dotplot, is causing the mean to be less than the median.
The large outlier, as seen in the dotplot, is causing the mean to be greater than the median.
O The approximately symmetric distribution, as seen in the dotplot, is causing the mean to be about the same as the
median.
he approximately symmetric distribution, as seen in the dotplot, is causing the mean to be greater than the median
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properties of spider silk using 21 female golden orb weavers, Nephila clavipes. The data on silk yield stress rn
the amount of force per unit area needed to reach permanent deformation of the silk strand. The data are exprece
megapascals (MPa).
164.0
478.7
251.3
351.7
173.0
448.9
300.6
362.0
272.4
740.2
329.0
327.2
270.5
332.1
288.8
176.1
282.2
236.1
358.2
270.5
290.7
(a) Use the software of your choice to make a dotplot of these data. Select the correct description of the shape, center,
and spread of the distribution.
O The distribution is unimodal and essentially symmetric except for a high outlier. The center is approximately 291
MPa. The spread is from 164.0 to 478.7 MPa.
0%
O The distribution is unimodal and extremely left-skewed except for a high outlier. The center is approximately 240
MPa. The spread is from 164.0 to 740.2 MPa.
The distribution is unimodal and essentially symmetric except for a high outlier. The center is approximately 29
MPa. The spread is from 164.0 to 740.2 MPa.
S Tie distribution is unimodal and extremely lefi-skewed excent for a hish outlier. The center is approxinately 0
MPa. The spread is from 164.0 to 478.7 MPa.
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