If you SCALE the data set ( multiply each element by 4
) , what will...
If you SCALE the data set ( multiply each element by 4
) , what will happen to the mean ,median , mode . prove it
mathematically by using equations .
please show ALL steps.
You want to estimate E[x] and you have two datasets. In the
first data set, there...
You want to estimate E[x] and you have two datasets. In the
first data set, there are 10 observations. In the second data set
there are 100 observations, but these observations involve
measurement errors. That is, X tilda = X + e, where e is a
classical measurement error. You can only use one dataset, and you
want to have a precise estimate in the sense of having a low
variance.
A) You should always use the first data set...
#2. Find the mean, median, and mode for the following sample of
scores:
&n
#2. Find the mean, median, and mode for the following sample of
scores:
3, 6, 7, 3, 9, 8, 3, 7, 5
Mean=
Median=
Mode=
#4. Find the mean, median, and mode for the scores in the
following frequency distribution table:
X
F
8
1
7
1
6
2
5
5
4
2
3
2
Mean=
Median=
Mode=
#6. A population of N = 15 scores has SX= 120. What is the
population mean?
#10 One sample has a...
Given a set A, an element x∈A, and a function f:A→A, x is a
fixed point...
Given a set A, an element x∈A, and a function f:A→A, x is a
fixed point for f if f(x) = x.
Suppose A = {♥,♦, ♣,♠}. How many functions are there mapping A to A
for which ♥ is a fixed point?
How many for which ♥ and♦ are fixed points?
♥,♦ and ♣?
How about functions for which all four elements are fixed
points?
A random sample of 9 biology students produced the following
data,
first test Score, x
second...
A random sample of 9 biology students produced the following
data,
first test Score, x
second test Score, y
22
30
53
37
67
10
69
38
68
21
91
82
98
28
46
36
16
27
where x measures the first test score and y measures the second
test score. What is the estimate of the y = a x + b regression
slope coefficient?
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...
A random sample of 9 biology students produced the following
data,
first test score, x
second...
A random sample of 9 biology students produced the following
data,
first test score, x
second test score, y
17
70
11
99
52
48
43
93
32
91
43
99
25
48
52
65
78
58
where x measures the first test score and y measures the second
test score. What is the estimate of the y = a x + b regression
intercept coefficient?
Given a random permutation of the elements of the set
{a,b,c,d,e}, let X equal the number...
Given a random permutation of the elements of the set
{a,b,c,d,e}, let X equal the number of elements that are in their
original position (as listed). The moment generating function is X
is: M(t) = 44/120 + 45/120e^t + 20/120e^2t + 10/120e^3t+1/120e^5t
Explain Why there is not (e^4t) term in the moment generating
function of X ?