Question

Consider these data sets:

I: 1, 3, 2, 2, 5, 4, 4, 3, 3

II: 1, 2, 4, 1, 2, 5, 2, 5, 1, 5, 5, 3

(a) Find the mean and median for each set. Show your work.

(b) Find variance and standard deviation for each set. Show your work.

(c) Would you be surprised to hear someone claim that these data were drawn from the same population? (Hint: Draw a histogram for each set. Compare the shapes.)

Answer #2

answered by: anonymous

Consider the following sample data set:
1 2 3 4 4 5
1. What is the mode?
2. What is the median?
3. What is the mean?
4. What is the sample standard deviation? Interpret it? Show
your algebra.
5. Find the IQR and find if there is any outlier?

Some data from one experiment are given as below:
1, 1, 2, 3, 3, 4, 5, 5, 5, 7, 9
a) Find the median, mean and variance of the data. [4 marks]
b) Find the first, second, third quartiles and the Inter
Quartile Range (IQR), minimum and maximum values. [4 marks]
c) Draw the box-plot as stated in (b) above. [2 marks]

Consider the following data: 10, 2, 1, 4, 5, 3, 4.
a) Find the median.
b) Find the mean.
c) Find the standard deviation.
d) Find the median if -3.2 is added to each data
point.
e) Find the mean if -3.2 is added to each data
point.
f) Find the standard deviation if -3.2 is added to
each data point.
g) Find the median if each data point is
multiplied by -9.2.
h) Find the mean if each data...

Consider the following two sample data sets.
Set 1: 4 5
7 6 8
Set 2: 7 19 12
4 2
a. Calculate the coefficient of variation for each data set.
b. Which data set has more variability?

1. Some data from one experiment are given as below:
1, 1, 2, 3, 3, 4, 5, 5, 5, 7, 9
a) Find the median, mean and variance of the data. [4 marks]
b) Find the first, second, third quartiles and the Inter
Quartile Range (IQR), minimum and maximum values. [4 marks]
c) Draw the box-plot as stated in (b) above. [2 marks]

1, For the sample shown in the frequency distribution table, the
median is ---Select--- 3, 3.5, 4, 15/2 =
7.5 .
X
f
5
1
4
5
3
4
2
1
1
1
2, For the sample shown in the frequency distribution table, the
mode is ---Select--- 3 3.5 4 5 .
X
f
5
1
4
5
3
4
2
1
1
1
3, Find the mean, the median, and the mode for the set of scores
in the frequency distribution histogram...

Compare the three data sets on the right.
(i)
45678910
A dot plot has a horizontal axis labeled from 4 to 10 in increments
of 1. The graph consists of a series of plotted points from left to
right. The coordinates of the plotted points are as follows, where
the label is listed first and the number of dots is listed second:
5, 1; 6, 4; 7, 5; 8, 4; 9, 1.
(ii)
45678910
A dot plot has a horizontal...

Consider the following set of ungrouped sample data. Answer
parts A through D.
5 4 4 4 0 2 3 7 7 8
(A) Find the mean and standard deviation of the ungrouped
sample data.
x=
(B) What proportion of the measurements lies within 1 standard
deviation of the mean? Within 2 standard deviations? Within 3
standard deviations?
(C) Based on your answers to part (B), would you conjecture
that the histogram is approximately bell shaped? Explain.
(D) To confirm your conjecture, construct a histogram with the
class interval...

statistics question
1. Create two sets of data, at least 5 numbers each. Explain
what the data represent. Find mean, median, variance and standard
deviation of each group. What is the best measure of center in the
two groups and why? Where is the variation in data bigger and
why?

Given the data set A = {5, 4, 6, 14, 2, 2, 11, 4, 5, 8, 3, 1,
12, 15, 13}, which is the data of a sample taken from a larger
population. Please Solve NOT Using Excel
Calculate the mean deviation Show all work! (5
pts)
Mean= 7
MD= (|5-7|+ |4-7|+
|6-7|+|14-7|+|2-7|+|2-7|+|11-7|+| 4-7|+ |5-7|+| 8-7|+|
3-7|+|1-7|+|12-7|+ |15-7|+| 137|)/7
Mean deviation = 4.13
Calculate the variance Show all work! (5
pts)
Calculate the standard deviation Show all
work! (5...

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