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Measures of Central Tendency and Dispersion
Page 6
Questions (309)
Calculate μ and σ, where σ is the standard deviation, defined by the following.
σ^2 = integral between (−∞,∞) (x-μ)^2
0 answers
asked by
Anonymous
458 views
can you make a set of 7 numbers having the following landmarks mode 21 median 24 maximum 35 range 20
1 answer
asked by
pooh
480 views
a random sample of 20 prices for summer sleeping bags was taken with a sample mean of $83.75 and a sample standard deviation of
3 answers
asked by
julie
465 views
Given 15 data items:
11, 15, 13, 16, 8, 8, 9, 10, 11, 4, 9, 6, 8, 3, 17 Calculate the: range variance standard deviation first
1 answer
asked by
Kim
466 views
Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17.
1 answer
asked by
Sarah
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find the median, mode and range for 28, 61,19,43,89,126.
1 answer
asked by
fardowsa
444 views
3. Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different.
a. The 29th
1 answer
asked by
tanya
466 views
Please help anyone if you can This one is really confusing me I need the IQR for these set of numbers
0.10,0.18,0.20,0.21,0.24,0.
5 answers
asked by
MATH 115 SEC. 8.5 PG 646
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A student score 78 on his statistics test where the average score was 90 the the standard deviation was 7.
1 answer
asked by
Barbara
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(TCO A) Consider the following age data, which is the result of selecting a random sample of 20 United Airlines pilots.
47 45 45
3 answers
asked by
Pat
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What are the values of the mean and spread for the dataset shown in the bar graph?
The amount of times Exercised per week o 1 2 3
1 answer
asked anonymously
89 views
What are the values of the mean and spread for the dataset shown in the bar graph?
The bottom of the graph shows 0,1,2,3,4,5 and
1 answer
asked by
Neliah1512
37 views
The median of 5 consecutive numbers is 21. The range of the same set of numbers is 20. List out the 5 numbers.
3 answers
asked by
M
41 views
A county with a large population need to know what the average income is for tax purposes. A simple random sample of 1000
1 answer
asked anonymously
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A study of first year QPA’s has been taken. The following data have been found: The average first year QPA is 2.4 with an SD
1 answer
asked anonymously
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The list shows the number of employees at seven companies.
What is the interquartile range of these numbers? . 525, 650, 539,
1 answer
asked by
period slayy
49 views
Select the correct answer.
The owner of a chain of clothing stores is comparing the monthly profit earned in the past year from
1 answer
asked by
jeff
38 views
The class sizes of the Introductory Psychology courses at a college are shown below.
121, 134, 106, 93, 149, 130, 119, 128 The
1 answer
asked by
jeff
28 views
A data distribution has a mean of 550 and a standard deviation of 100. The distribution is bell shaped. Estimate the data values
1 answer
asked anonymously
28 views
An unknown distribution has a mean of 90 and a standard deviation of 10. Sample size n=36 are drawn randomly from the
1 answer
asked anonymously
32 views
The ages, in years, of four members of a family are represented
by a, b, c and d, where a < b < c < d. Their mean age is 34,
1 answer
asked by
Mystic
20 views
What are the values of the mean and spread for the dataset shown in the bar graph?
Mean 12, Spread 3 Mean 2, Spread 5 Mean 12,
3 answers
asked by
E
30 views
Find the standard deviation for the group of data items. Round to the nearest hundredth.
12, 12, 12, 15, 18, 18, 18 9.00 3.00
1 answer
asked anonymously
17 views
Mr. Gomez is researching the price of a new car. He narrowed his search down to five car dealers. The price of the car at each
1 answer
asked anonymously
30 views
Given a mean of 61.2 and a standard deviation of 21.4, within how many standard deviations of the mean do the values 45, 78, 62,
3 answers
asked by
sheep
20 views
PART 1: Using complete sentences, explain what the mean and MAD tell us about the data for Martin and his test score that you
1 answer
asked anonymously
24 views
What is the standard deviation of the following data set rounded to the nearest tenth?
51.8, 53.6, 54.7, 51.9, 49.3
1 answer
asked by
sheep
20 views
Which of the statements below is true for the following set of numbers?
20, 15, 50, 85, 75, 60 A)The range is 70 and the midrange
1 answer
asked anonymously
20 views
Mary records her most recent bowling scores. Her scores are shown below in order from least to greatest.
107,130,136,140,140,142,
1 answer
asked anonymously
23 views
Which of the statements below is true for the following set of numbers?
20, 5, 50, 95, 75, 60 A) The range is 90 and the midrange
1 answer
asked anonymously
23 views
if the mean is 3 and the standard deviation is 1,the score associated with a raw score of 4.5 ?
is -1 is-0 cannot be computed
1 answer
asked by
hahahaha
18 views
Team A has a mean of 55 points with a mean absolute deviation of 5.5. Team B has a mean of 45 points with a mean absolute
1 answer
asked anonymously
7 views
What are the mean, variance, and standard deviation of these values? Round to the nearest tenth. x x – (x – )2 53 5.4 29.2
1 answer
asked by
Indiana Thier
26 views
Sharon is analyzing the points scored in a quiz competition by three high schools. She has calculated the mean and standard
1 answer
asked anonymously
20 views
The dot plots represent household incomes from two subdivisions. Which of the statements are true?
I. Subdivision 1 has a greater
1 answer
asked anonymously
30 views
what are the mean, variance, and standard deviation of these values? round to nearest tenth. 11, 11, 3, 1, 11, 11
A. mean=8,
1 answer
asked anonymously
21 views
183535373880
lower quartile = median = upper quartile =
1 answer
asked anonymously
7 views
204, 211, 216, 300, 426, 567, 68
what is the mean absolute deviation
3 answers
asked anonymously
23 views
Compare and interpret the measures to select the data with the least variation.
A. Dataset C has a standard deviation of 1.2 and
1 answer
asked anonymously
10 views
What is the MAD and IQR for the given dataset?
1, 4, 6, 7, 9, 10, 10, 11, 12, 12, 14, 15, 17, 18, 19 (1 point) Responses MAD: 11;
1 answer
asked anonymously
47 views
The following data sets represent the highway fuel efficiency in miles per gallon (mpg) of randomly selected cars from two car
1 answer
asked anonymously
12 views
The following data sets represent the highway fuel efficiency in miles per gallon (mpg) of randomly selected cars from two car
1 answer
asked by
Kanna
14 views
Question
The following data sets represent the highway fuel efficiency in miles per gallon (mpg) of randomly selected cars from
1 answer
asked anonymously
81 views
pick one
The dot plots show the numbers of children’s books purchased by customers at two different bookstores on one day.
1 answer
asked by
meep
9 views
The employees of a soda bottling plant are examining the amount of soda in milliliters that is in each can before and after a
1 answer
asked anonymously
12 views
The list shows the maximum flying speeds of the ten fastest birds worldwide.
88, 72, 77, 95, 65, 80, 70, 106, 65, 68 What is the
1 answer
asked by
.
6 views
The ages of randomly selected employees at two companies are recorded. Their ages are as follows:
Which of the following
3 answers
asked anonymously
38 views
Find the mean, variance, and standard deviation for the following data set. Round to the nearest tenth. 55, 87, 62, 85, 93, 75
1 answer
asked by
anonymous
12 views
The range of response variable measures for a treatment group sampled from a population equals 8. Which of the following could
1 answer
asked anonymously
2 views
The mean is 2
The spread of a set is 3 The overall shape of the set is skewed On the first graph 1=0 dots, 2= 3 dots, 3= 3 dots,
1 answer
asked anonymously
5 views
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Parent Categories (13)
Data Analysis
Data Analysis and Descriptive Statistics
Data Analysis and Statistics
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