you help me with question 56 a. class 3 has the highest mean score, because from the graph we can see that more frequencies are above 60 while the other 2 classes around 60. b. class 3 has the highest median score. it is neg
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.
can you help me with question 56
a.
class 3 has the highest
b.
class 3 has the highest
![C
since class one and class three has symmetric
distribution around 60 their mean and median are
approximately same and at 60. but for class 3 it is
negatively skewed. median will always be greater
than mean. so the difference between mean and
median is high at class 3
d
class 1 has the smallest standard deviation.
Because it is symmetric around 60 and the
frequencies are decreasing gradually for those
points away from mean.
e
with same argument made in (d) we can conclude
that class 1 has smallest Inter Quartile Range.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F00209c5d-0115-4271-914f-0e12a90549cd%2Fb93441b0-93c6-4fc2-b98c-939bcc54672d%2F6vcbuio_processed.jpeg&w=3840&q=75)
![d) Wh.
e) Which class had the smallest IOI
56. Test scores, again. Look again at the histograms of test
a) Overall, which class do you think performed better on
the test? Why?
b) How would you describe the shape of each distribution?
c) Match each class with the corresponding boxplot.
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