a. find the mean and standard deviation of the following set of
ungrouped sample data: 4,...
a. find the mean and standard deviation of the following set of
ungrouped sample data: 4, 3, 5, 2, 3, 1, 2, 5, 3, 1, 5, 4, 6, 4, 5,
1, 3, 3, 7, 8, 7, 5, 4, 3, 7, 8, 4, 6, 9, 10, 10, 9, 6, 4, 6.
b. What proportion of the measurements lies within one standard
deviation of the mean? Within two standard deviations of the mean?
Within three standard deviations?
c. Based on part (b),...
For the following set of 10 scores, compute the range, the
standard deviation, and the variance....
For the following set of 10 scores, compute the range, the
standard deviation, and the variance. 5, 7, 3, 4, 5, 6, 7, 2, 5,
3.
Range:
Standard deviation (3 digits after decimal point):
Variance (1 digit after decimal point):
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to...
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to explore different treatment methods to
effect memory skills in high school freshmen. Subjects were given a
memory test (under multiple conditions) these were the results:
Group 1
10, 8, 9, 11,
8, 9, 7, 6,
9, 8
Group 2
12, 10,
11, 9, 13, 8, 9, 12, 11, 11
Group 3
10, 9, 10, 9, 11,
8, 7, 9, 10, 11...
Using the same data set as in 1, find the variance, standard
deviation, and range, using...
Using the same data set as in 1, find the variance, standard
deviation, and range, using the formulas. Using the same data set
as in 1, find the variance, standard deviation, and range, using
the formulas. Show the formulas and intermediate steps. Round your
answers to the correct number of decimal places
data set 9, 2, 8, 2, -9, 5, 6, 2, -5, -9, 9, 4, 5, 5, -3, -1,
0
Assume the data set described is normally distributed with the
given mean and standard deviation, and...
Assume the data set described is normally distributed with the
given mean and standard deviation, and with n
total values. Find the approximate number of data values that
will fall in the given range.
Mean= −14.5
Standard deviation= 1.7
n= 120
Range: −17.9 to −11.1
in this case, we expect about data
values to fall between -17.9 and −11.1
For the table below, fill in the missing sections for the Mean,
Median, Mode, Range, and...
For the table below, fill in the missing sections for the Mean,
Median, Mode, Range, and Standard
Deviation on your own. Remember to round to two decimal
places.
Hint: Put it in SPSS to simplify the
calculation of the standard deviation, using the “Means” test
under the Analyze menu!
Then complete
the five questions and transfer your answers to the quiz in
Canvas
Condition 1 Scores
Condition 2 Scores
1
5
1
7
2
6
3
5
2
5
2...