Calculate the 20th, 40th, and 70th percentiles for the following
data set: (Use the methodology shown...
Calculate the 20th, 40th, and 70th percentiles for the following
data set: (Use the methodology shown in
Section 3.2 of the text to calculate the percentiles. Negative
values should be indicated by a minus sign. Do not round
intermediate calculations. Round your final answers to 1 decimal
place.)
-259
-240
-326
-307
-306
-323
-324
20th percentile:
40th percentile:
70th percentile:
For the data set 61, 32, 50, 73, 51, 42, 55, 65, 59, 57 find the...
For the data set 61, 32, 50, 73, 51, 42, 55, 65, 59, 57 find the
standard deviation accurate to one decimal place. Make sure you
work this problem by hand with the formula I introduced in class.
Do not cheat yourself out of learning!
Sample Mean =
Sum of squared deviations =
Denominator =
Standard Deviation =
Use the accompanying data set to complete the following
actions.
a. Find the quartiles.
b. Find...
Use the accompanying data set to complete the following
actions.
a. Find the quartiles.
b. Find the interquartile range.
c. Identify any outliers.
40 51 35 44 40 37 40 48 45 37 36 56 43 36 15 52 37 51 30 30
a. Find the quartiles.
The first quartile, Q1 is =
The second quartile, Q2 =
The third quartile, Q3 =
(Type integers or decimals.)
b. Find the interquartile range.
The interquartile range (IQR) is =
(Type...
The following is a set of data for a population with N=10.
8, 9, 11, 5,...
The following is a set of data for a population with N=10.
8, 9, 11, 5, 22, 10, 9, 7, 9, 6
a. Compute the population mean.
b. Compute the population standard
deviation.
a. The population mean is μ =
(Type an integer or a decimal. Do not round.)
b. The population standard deviation is σ=
(Round to two decimal places as needed.)
Consider the data set: 2, 10, 3, 7, 11, 13, 8, 4, 2, 15, 37, 88,...
Consider the data set: 2, 10, 3, 7, 11, 13, 8, 4, 2, 15, 37, 88,
111, 23, 21, 22, 16, 43, 1, 3, 6, 19, 8, 14, 20, 233, 1, 25, 17 (a)
By glancing at this data set, would you expect the sample mean to
be greater than the median, or smaller than the median? greater
than the median Correct: Your answer is correct. (b) By how much do
the sample mean and sample median differ? (To answer...
Consider the following set of data.
(24, 11), (33, 45), (57, 26), (79, 18), (107, 58),...
Consider the following set of data.
(24, 11), (33, 45), (57, 26), (79, 18), (107, 58), (116,
6)
(a) Calculate the covariance of the set of data. (Give your answer
correct to two decimal places.)
(b) Calculate the standard deviation of the six x-values
and the standard deviation of the six y-values. (Give your
answers correct to three decimal places.)
sx
=
sy
=
(c) Calculate r, the coefficient of linear correlation,
for the data in part (a). (Give your...