Only need answer for (f)
You can find scores of a test:
{ 56,67,67,70,73,73,75,76,77,79,80,81,83,83,85,87,88,89,92,93
}
(a)...
Only need answer for (f)
You can find scores of a test:
{ 56,67,67,70,73,73,75,76,77,79,80,81,83,83,85,87,88,89,92,93
}
(a) Obtain a frequency distribution for the test. (The number of
bins and intervals should be determined according to the rules in
the class slides).
(b) Draw a frequency histogram.
(c) Use the frequency distribution to compute the mean and the
median and variance. Are there any outliers in this data set?
(d) Plot the box plot of data based on the statistics you can...
Only need answer for (c) and (f)
You can find scores of a test: {
56,67,67,70,73,73,75,76,77,79,80,81,83,83,85,87,88,89,92,93...
Only need answer for (c) and (f)
You can find scores of a test: {
56,67,67,70,73,73,75,76,77,79,80,81,83,83,85,87,88,89,92,93 }
(a) Obtain a frequency distribution for the test. (The number of
bins and intervals should be determined according to the rules in
the class slides). (b) Draw a frequency histogram.
(c) Use the frequency distribution to compute the mean
and the median and variance. Are there any outliers in this data
set?
(d) Plot the box plot of data based on the statistics...
You have developed a test of musical ability, and would like to
report the scores as...
You have developed a test of musical ability, and would like to
report the scores as Stanines, with a mean of 5 and a standard
deviation of 2. Raw scores on your test have a mean of 30 and a
standard deviation of 5. What is the Stanine score for someone who
obtains a raw score of 25? a. 1 b. 3 c. 7 d. 9
You have the following sample of scores.
23, 24, 20, 22, 25, 21, 28, 24, 29,...
You have the following sample of scores.
23, 24, 20, 22, 25, 21, 28, 24, 29, 28 mean = 24.4 ΣX2 = 6040
variance = 9.6
What is ΣX?
What is SS
What is the standard deviation?
What is the best measure of central tendency mean, median or
mode?
Why did you choose that measure of central
tendency?
In a medical class of 147 students, the distribution of scores
on a biochemistry final examination...
In a medical class of 147 students, the distribution of scores
on a biochemistry final examination has a mean equal to 67, a
median equal to 76, a mode equal to 80, a standard deviation equal
to 5.5, and a variance equal to 30.25. Three students were unable
to take the test on the scheduled date and were given a different
form of the exam 1 week later. Which parameter is most likely to be
the least biased estimator of...
3. Imagine three treatment groups are being compared using
Analysis of Variance. What effect would each...
3. Imagine three treatment groups are being compared using
Analysis of Variance. What effect would each of the following have
on an F score (make it smaller, make it larger, or cause no
change)? Explain why.
a. A large within-group error.
b. One group with a mean that is two standard deviations away
from the other groups.
c. A great deal of overlap between two groups.
d. Adding a bunch of outliers (extreme scores) to all three
groups being compared.