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Measures of Central Tendency and Dispersion
Page 2
Questions (309)
Roughly speaking, the standard deviation indicates how far, on average, the observations are from the mean. Do you think that
3 answers
asked by
Lyndse
1,095 views
3. From a set of 1000 observations known to be normally distributed, the mean is 534 cm and SD is 13.5 cm. How many observations
3 answers
asked by
nimisha
868 views
In a neighborhood donut shop, One type of donut has 490 calories, Three types of donuts have 520 calories, Three types of donuts
4 answers
asked by
Abby
2,294 views
what are the mean median mode and range of the following data set given the altitude of lakes in feet. -11 -28 -17 -25 -28 -39
3 answers
asked by
Jaylynn
194 views
The heights in inches of 18 randomly selected adult males in LA are listed as: 70, 69, 72, 57, 70, 66, 69, 73, 80, 68, 71, 68,
2 answers
asked by
Bill
747 views
The mean number of minutes spent on a treadmill at the local gym is 28 minutes with a standard deviation of 8. If Kurt's z-score
3 answers
asked by
chloe wallace
1,441 views
Here are the science test scores from Ms. O’Donnell’s class:
55, 60, 70, 70, 75, 75, 75, 80, 80, 85, 85, 85, 85, 90, 90, 95,
2 answers
asked anonymously
104 views
The Stop N’ Go convenience chain recently selected a random sample of 10 customers. The store monitored the number of times
3 answers
asked by
petrit
620 views
The ages (in years) of 10 randomly selected individuals are 24, 15, 18, 30, 32, 40, 22, 27, 33, and 35. Form a new dataset by
2 answers
asked anonymously
93 views
What are the mean, median, mode, and range of the data set given
-11 -28 -17 -25 -28 -39 -6 -46?
7 answers
asked by
Anonpineapple99
1,065 views
A population has a mean of � � 30 and a standard
deviation of � � 5. a. If 5 points were added to every score in the population,
5 answers
asked by
Nickie
8,048 views
For a set of data with mean 12 and variance 9, approsimately 68% of the values will fall between 6 to 18. Is the true or false
3 answers
asked by
Belinda
1,015 views
1.On a test the mean is 75 and the standard deviation is 5.
A. What is the probability that a randomly selected score is higher
5 answers
asked by
Gerard
2,109 views
A sample consists of the following n � 6 scores: 2, 7,
4, 6, 4, and 7. a. Compute the mean and standard deviation for the sample.
3 answers
asked by
Nickie
1,583 views
Find the mean and standard deviation of the data set. If necessary, round to the nearest hundredth.
4, 8, 5, 12, 3, 9, 5, 2 Mean
6 answers
asked by
Anonymous
2,914 views
The bottom 30% students failed an end of semester exam. The mean for the the test was 120 and the standard deviation was 17.
4 answers
asked by
Aman Teklay
2,458 views
45
32 26 23 19 Calculate the following: a. The mean age for the data set b. The deviation from the mean and absolute deviation
6 answers
asked by
N/a person
533 views
what is the mean, median, mode, and range for the numbers 24, 16, 11, 10, 16, 4, 17
5 answers
asked by
Madi
434 views
Given a normal distribution of scores with a mean of 100 and a SD of 10, compute z scores for the following raw valves: 95, 115,
3 answers
asked by
Anonymous
1,356 views
From a sample with n equals=24, the mean number of televisions per household is 3 with a standard deviation of 1 television.
4 answers
asked by
Addison
3,321 views
1. A distribution has a standard deviation of � � 12.
Find the z-score for each of the following locations in the distribution.
4 answers
asked by
Nickie
856 views
A government report looked at the amount borrowed for college by students who graduated in 2000 and had taken out student loans.
3 answers
asked by
karen
1,358 views
A large population has a mean of 200 and a standard deviation of 40. Which one of the following best describes the percentage of
3 answers
asked by
Natalie
1,049 views
A recent survey found that 72% of all adults over 50 wear glasses for driving. In a random sample of 100 adults over 50, what is
9 answers
asked by
Sheila
2,785 views
For 3 collections, the mode was 126 and the range is 26. What are the 2 possibilities for the number of items in each
4 answers
asked by
karen
923 views
Suppose a tire manufacturer wants to set a mileage guarantee on its new XB 70 tire. Life tests revealed that the mean mileage is
4 answers
asked by
Brea
3,167 views
Suppose that a college admissions office needs to compare scores of students who take the Scholastic Aptitude test(SAT) wit
4 answers
asked by
David
1,542 views
Find the score that separates the top 75% from the bottom 25% if the Mean is 100 and the Standard deviation is 15
3 answers
asked by
cindy
1,226 views
The test marks for 29 students studying STSA 1624 produced a mean of 72,8% and a variance of 275,56%. If the distribution of the
3 answers
asked anonymously
46 views
The same car at three different dealerships had a median price of $14,833.02. The mean price was
$14,544.43 and the range of
3 answers
asked by
thomas
759 views
Find the mean, median, mode, and range of the following set of numbers: 23, 25, 27, 21, 24, 27
4 answers
asked by
jason
333 views
Find the mean, median, mode, and range of each data set below. If there is no mode, write “no mode”; if there is more than
3 answers
asked by
kaleb
516 views
Given the altitude of lakes in feet: –12, –9, –14, –39, –49, –49, –18, –43, find the mean, median, mode, and
4 answers
asked by
Veronica
2,051 views
Faculty in the psychology department at APUS consume an average of 5 cups of coffee per day with a standard deviation of 1.5.
2 answers
asked by
StudentD
855 views
Find the mean and standard deviation for the data set
{6, 8, 7, 5, 10, 6, 9, 8, 4} Please SHOW steps for everything
4 answers
asked by
here you go <3
428 views
What is the range of this data set?
27, 5, 11, 13, 10, 8, 14, 18, 7 A.(22) B.(7.5) C.(11) D.(16) Use the list below to find the
4 answers
asked by
emqsly
378 views
1.What are the minimum, first quartile, median, third quartile, and maximum of the data set ?
2,6,12,8,3,9,14,20 A. Minimum=2
4 answers
asked by
GummyBears16
2,272 views
How does the standard deviation differ to of the sample mean x bar.
Please help I'm confused
2 answers
asked by
Sam
946 views
Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height
3 answers
asked by
jassi
380 views
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The
3 answers
asked by
Scott
1,425 views
the standard deviation of a set is 4. what is the variance
3 answers
asked anonymously
25 views
Make up set Set of7 numbers having this landmarks mode21. Median24 maximum 35 range 20
4 answers
asked by
Sebastian
409 views
Find the median, the first quartile,
the third quartile, the minimum, the maximum, and the rangeof the data; 34, 36, 38, 40, 42,
5 answers
asked by
Victoria
810 views
a sample of n=25 scores has a mean of M=60 and a std dev of s=12. Find the z-score corresponding to each of the following scores
2 answers
asked by
annabelle
819 views
For a sample with a mean of M=85, a score of X=90 corresponds to a z-score of z=1.00. What is the sample standard deviation?
3 answers
asked by
Andrew
887 views
Select all that apply
Which of the following represents the expected value? Multiple select question. σ2 μ Var(X) σ SD(X) E(X)
2 answers
asked anonymously
48 views
Consider the following population data:
27 51 8 19 13 a. Calculate the range. b. Calculate MAD. (Round your intermediate
2 answers
asked anonymously
60 views
What are the values of the mean, median and spread for the dataset shown in the bar graph?
10 answers
asked by
APPLE JUICE
79 views
What is the sum of the absolute deviations in the following dataset: 68, 51, 75, 78, 94, 35? The mean is 66.8.(1 point)
Responses
2 answers
asked by
no name
57 views
The amounts of rainfall measured in inches in downtown Los Angeles during the six rainy seasons from 2000 to 2006 are given as a
2 answers
asked by
Unknown
59 views
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Data Analysis
Data Analysis and Descriptive Statistics
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