Question

Guadalajara Tours' daily sightseeing trip has a capacity of people. Each day, tour officials record the number of people making the trip. The data for a selection of summer days are as follows. , , , , , , , , , , , , , , , , , , , , (a) For these data, which measures of central tendency take more than one value? Choose all that apply. Mean Median Mode None of these measures (b) Suppose that the measurement 33 (the smallest measurement in the data set) were replaced by 14. Which measures of central tendency would be affected by the change? Choose all that apply. Mean Median Mode None of these measures (c) Suppose that, starting with the original data set, the smallest measurement were removed. Which measures of central tendency would be changed from those of the original data set? Choose all that apply. Mean Median Mode None of these measures (d) Which of the following best describes the distribution of the original data? Choose only one. Negatively skewed Positively skewed Roughly symmetrical

33,

37,

41

41,

41

44

46

47

48

48

49

49

51

51

52

52

53

54

54

54

54

) For these data, which measures of central tendency take more than one value? Choose all that apply.

Mean

Median

Mode

None of these measures

(b) Suppose that the measurement 33 (the smallest measurement in the data set) were replaced by 14. Which measures of central tendency would be affected by the change? Choose all that apply.

Mean

Median

Mode

None of these measures

(c) Suppose that, starting with the original data set, the smallest measurement were removed. Which measures of central tendency would be changed from those of the original data set? Choose all that apply.

Mean

Median

Mode

None of these measures

(d) Which of the following best describes the distribution of the original data? Choose only one.

Negatively skewed

Positively skewed

Roughly symmetrical

Answer #1

A survey of retirees was taken. Among other things, the retirees
were asked to report the age at which they retired. Here are those
22 ages (in years).
38,42,44,47,53,54,58,59,61,62,63,67,67,68,68,69,69,72,73,74,74,76
(a) Which measures of central tendency do not exist for this
data set? Choose all that apply.
Mean
Median
Mode
None of these measures
(b) Suppose that the measurement 76 (the largest measurement in
the data set) were replaced by 83. Which measures of central
tendency would be affected by the...

Here are the numbers of calls received during
20
randomly chosen,
15
-minute time intervals at a customer support service.
1
,
4
,
6
,
6
,
8
,
9
,
11
,
11
,
11
,
12
,
13
,
13
,
14
,
14
,
17
,
17
,
18
,
18
,
21
,
23
(a) Which measures of central tendency do not exist for this
data set? Choose all that apply.
Mean
Median
Mode
None...

Flight 4581 travels daily from Pittsburgh to San Antonio. The
flight is due into San Antonio at 5:07 p.m. The following list
gives the Flight arrival time relative to p.m. (in minutes) for a
selection of days. (A negative number means that the flight arrived
early.)
-5,-4,-4,-3,-2,2,2,3,4,5,6,6,6,11,17,25,26,36
(a) For these data, which measures of central tendency take more
than one value? Choose all that apply.
Mean
Median
Mode
None of these measures
(b) Suppose that the measurement -5 (the smallest...

To begin to better understand personal experiences of headache
pain a drug manufacturer has asked 18 adults to write the most
recent headache on a scale of 0 to 100 with zero corresponding to
no pain and 100 corresponding to the greatest pain that a person
has ever felt here are the 18 ratings first rating 14 next 16 next
16 next 16 next 18 next 23 next to 25 next 27 next 33 next 34 next
35 next 44...

Which one of the following is always true?
Select one:
a. The coefficient of variation measures variability in a
positively skewed data set relative to the size of the median.
b. None of the suggested answers are correct
c. The coefficient of variation is a measure of relative
dispersion that expresses the standard deviation as a percentage of
the mean, for any data on a ratio scale and an interval scale.
d. The interquartile range is very unique in the...

A researcher has conducted a study and has obtained a data set.
He is seeking your help and requests that you calculate the mean,
range, median, and mode and distinguish which of these are measures
of central tendency and which are measures of variability.
Additionally, he has calculated the variance and standard
deviation, and would also like you to classify these measures. He
thanks you in advance for your help. The data set is as follows:
14, 10, 9, 16,...

Answer True or False for each of the following. If your answer
is FALSE, provide an example that proves your point. If your answer
is true, explain. Given a typical set of numerical data with an ODD
number of values.
1. The mean is always one of the data values.
2. The median is always one of the data values
3. The mode is always one of the data values.
4. The range measures the variability of the given data...

1. Why do we prefer the median as a better measure of central
tendency when the data are positively/negatively skewed? Are there
times in which mean or mode should be used instead? Explain your
answer.
2. Find an article about the misuse of statistics and share what
you have learned from the article. Then, find an example of when
statistics were misused/skewed and state the reason why you think
the statistics were reported that way.
3. Maybe you have considered...

. Forbes Magazine lists the richest
people in the world each year. The following data represents the
ages of 40 of these individuals. All of these individuals have a
net worth of at least $5 billion.
17
24
31
32
32
43
43 43
46
50
51
51
54
55
55 59
59
60
62
62
62
62
63 64
69
71
71
73
73
74
75 75
76
77
79
81
82
82
84 84
Calculate the mean and...

Given the data to the left, which contains the age and the pulse
rate for 38 female patients. Using excel, TI, or statcrunch to find
and indicate the measures of central tendencies, the measures of
variations and the five-number summary of the pulse rates only.
Draw the box plot and the histogram for the pulse rates and the
scatter plot using both columns.
Write a brief conclusion including:
· What do the central tendencies tell you about the data, is...

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