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Measures of Central Tendency and Dispersion
Page 3
Questions (316)
The WAIS has a mean of __________ and a standard deviation of __________.
A. 20; 5 B. 75; 10 C. 100; 15 D. 125; 30
1 answer
asked by
.....
70 views
A distribution of score has a mean of 100 and a standard deviation of 10.What is the score that is two standard deviation above
1 answer
asked by
OSEI,SAMUEL YEBOAH
49 views
What percent of the score in a distribution fall between the median an the third quartile?
33, 25, 65, 50???
1 answer
asked by
Ayesha
58 views
If each of these victims spent an additional 10 hours, what is the new mean and standard deviation
1 answer
asked by
Anonymous
103 views
Find the standard deviation (rounded to the nearest unit) for the data indicated.
Test Score Frequency 90 2 80 5 70 9 60 6 50 4
3 answers
asked by
ryan
1,432 views
Fifty undergraduates participated in the selection procedures. Their average age was 21 with a standard deviation of 1.20. There
1 answer
asked by
Ann
403 views
How are the median and upper and lower
quartiles the same? How are they different?
5 answers
asked by
Hannah
453 views
How are the median and upper and lower
quartiles the same? How are they different?
1 answer
asked by
Hannah
440 views
Find the averege ,maximum,minimum and sum three number
3 answers
asked by
GETACHEW
360 views
Mean=15.854, Median=15.99, Mode=16.21, SD=0.661381
1) what is the probability that a randomly chosen bottle will contain 16
2 answers
asked by
MM
507 views
A group of data elements has a mean M and a standard deviation S.
a) Find the new mean and the new standard deviation if a
1 answer
asked by
Abigail
442 views
Suppose a Normal model describes the fuel efficiency of cars currently registered in your state. The mean is 27 mpg, with a
3 answers
asked by
Ali
719 views
The mean score on the exit examination for an urban high school is 63 with a standard deviation of 9. What is the standard
1 answer
asked by
angela
912 views
The table below shows the number of hours some business people in two states spend in meetings each week:
State A 21 23 24 22 24
1 answer
asked by
britany
661 views
Suppose that weights for women in their 20’s average 125 lb., with a standard deviation of 14 lb. For a sample of size 50 how
1 answer
asked by
Anonymous
417 views
If a population has a standard deviation σ of 18.2 units, what is the standard error of the mean if samples of size 25 are
2 answers
asked by
slomomo
1,223 views
Find the mean and the standard deviation of the number of hours parked. (Round your intermediate values and final answers to 3
3 answers
asked by
Anonymous
1,632 views
Find the range and the standard deviation (correct to two decimal places).
83, 96, 100, 100, 106=divided by 5=97 I did the
7 answers
asked by
Mary Ann
912 views
A random sample of mid-sized cars tested for fuel consumption gave a mean of miles per gallon with a standard deviation of miles
3 answers
asked by
Anonymous
1,422 views
Can you explain why Q1 = 3.5 and Q3 is 9 out of this dataset 0, 1, 3, 4, 6, 7, 7, 7, 8, 10, 12, 12.
My answers were: Assuming
1 answer
asked by
Alexis
248 views
Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms.
2 answers
asked by
Anonymous
708 views
Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms.
1 answer
asked by
Anonymous
422 views
Consider the GPA’s for the following 15 students
3.10, 3.20, 3.49, 2.68, 3.73, 3.39, 3.80, 3.11, 3.10, 3.10, 4.0, 3.89, 2.55,
1 answer
asked by
thomas
458 views
Score Percent of Students
5 13.6 4 22.9 3 25.4 2 18.9 1 19.2 find the mean and standard deviation of the scores
1 answer
asked by
I liked math until stats
277 views
The general population (Population 2) has a mean of 30 and a standard deviation of 5, and the cutoff Z score for significance in
4 answers
asked by
Jaky
1,881 views
A study found that for adults the general self-efficacy scale mean score was 35 and standard deviation was 12. A group of
2 answers
asked by
Mark
497 views
Can you analyze the central tendency and range of the given data set 5, 10, 15, 20, 25, 30, 35?
1 answer
asked by
Little timmy
226 views
What is the standard deviation of the data set given the atmospheric pressure readings in millibars: 1013, 1008, 1016, 1010,
2 answers
asked by
Abby
24,704 views
An extreme score that sets apart in value from the general distribution of values with which it is connected is known as…?
1 answer
asked by
Linda
455 views
Find the mean of the distribution shown.
x 2 5 7 P(x) 0.28 0.42 0.30 What is the mean and the standard deviation of this
1 answer
asked by
Lynn
338 views
What are the minimum, first quartile, median, third quartile, and maximum of the data set? As cars passed a checkpoint, the
2 answers
asked by
melinda
507 views
As cars passed a checkpoint ,the following speeds were clocked and recorded.
Speed (mph):55,62,61,54,68,72,59,61,70) Find the
4 answers
asked by
Karen
906 views
Invent a dataset with five values, with a mean smaller than the median and both the mean and median smaller than the standard
3 answers
asked by
Taylor
392 views
16. Describe what is measured by the mean and what is measured by the standard deviation for a set of scores.
1 answer
asked by
Mary beth
315 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
1 answer
asked by
patrena
476 views
Finde the mean , variance , standard deviation
N-127, P=0.66
1 answer
asked by
David
783 views
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 are
2 answers
asked by
quantitative analysis for managerial applications
550 views
recent 10K run the finisher are norm dist with a mean of 55 min and stand dev of 13
A) determine the percentage of finishers with
2 answers
asked by
RACHELLE
793 views
One student scored 54 on a math test for which the mean score was 50.5 and the standard deviation was 3.2. Another student
1 answer
asked by
Kerrin
434 views
A set of 50 data values has a mean of 27 and a variance of 16.
I. Find the standard score (z) for a data value = 19. II. Find the
1 answer
asked by
Jennifer
384 views
A set of 50 data values has a mean of 27 and a variance of 16.
I. Find the standard score (z) for a data value = 19. II. Find the
1 answer
asked by
Jennifer
383 views
make up a set of at least twelve numbers that hav the following landmarks maximum:8 range:6 mode:6 median:5
1 answer
asked by
brittney
359 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
2 answers
asked by
Jen
551 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
1 answer
asked by
Jen
505 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
2 answers
asked by
Jen
530 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
1 answer
asked by
Jen
488 views
Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work.
Errors
1 answer
asked by
Jennifer
433 views
Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work.
Errors
1 answer
asked by
Jennifer
386 views
a population of score has u=50 and standard devidation =10 if every score in the population is multipied by 2 the new mean and
1 answer
asked by
mary
357 views
Indicate whether the given statement could apply to the data set consisting of 1000 values that are all different.
1. The 29% is
3 answers
asked by
Sonia
407 views
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Parent Categories (13)
Data Analysis
Data Analysis and Descriptive Statistics
Data Analysis and Statistics
Data Analysis or Statistics
Data Analysis/Statistics
Data and Statistics
Descriptive Statistics
Probability and Statistics
Statistical Analysis
Statistical Measures
Statistics
Statistics and Probabilities
Wage statistics