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Descriptive Statistics
Page 7
Questions (1,514)
Given the Variable X measured at a Nominal Level, what descriptive statistical indice would you give if asked to provide the
4 answers
asked by
Anonymous
1,278 views
The 60th percentile of a normal distribution is 110. The 70th percentile is 120. Find the 90th percentile.
3 answers
asked by
James
1,356 views
ten randomly selected people were asked how long they slept at night. The mean time was 7.1 hours and the (sample) standard
3 answers
asked by
Asia
1,765 views
The area between the mean and a Z score of +1.50 is 43.32%. This score is higher than ___ of the score in the distribution.
3 answers
asked by
DeeDee
2,689 views
If the standard deviation of a sample is 4.3 for 28 data values, what would the standard deviation be fore the population from
3 answers
asked by
Leisa
1,163 views
The box plot below summarize the distributions of SAT verbal and math scores among students at an upstate New York high school.
4 answers
asked by
Gee
3,074 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
The actual weights of bag of pet food are normally distributed.The mean of the weights is 50.0 lb,with a standard deviation of
2 answers
asked by
Anonymous
1,247 views
A professor informs her class that a test is very difficult, but the grades will be curved. Scores for the test are normally
4 answers
asked by
Sabrina
1,361 views
20. A study involves measuring the number of days absent from work for 216 employees of a large company during the preceding
3 answers
asked by
Katie
1,227 views
What happens to the mean, median and mode for the data shown if the outlier is eliminated?
8 3 5 3 23 4 7
4 answers
asked by
drea
968 views
Make up 20 hypothetical scores. Determine their mean, median, mode, and standard deviation.
4 answers
asked by
Janet
469 views
In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in
3 answers
asked by
Liz
2,389 views
A sample of 12 measurements has a mean of 34 and a standard deviation of 4.5. Suppose that the sample is enlarged to 14
4 answers
asked by
Anonymous
1,383 views
A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of 80 adults over 50, what is
3 answers
asked by
Anonymous
2,471 views
If 80% of the applicants are able to pass a driver's proficiency road test, find the mean, variance, and standard deviation of
4 answers
asked by
jean
1,788 views
Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of
4 answers
asked by
Sasha
1,449 views
Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of
4 answers
asked by
anonymous
1,499 views
You asked ten of your classmates about their weight. On the basis of this information, you stated that the average weight of all
6 answers
asked by
Josephine
1,449 views
Can someone help me with this questions.
Find the variance for a given data. Rpund your answer to one more decimal place then the
3 answers
asked by
natalie
2,534 views
The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine.
(a
15 answers
asked by
AOL
75 views
In a certain city, the average 20- to 29-year old man is 69.8
inches tall, with a standard deviation of 3.2
2 answers
asked by
AOL
64 views
Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2900
grams and a standard deviation of 700
11 answers
asked by
AOL
85 views
The table below shows how many minutes Mary spent exercising each day for the last two weeks.
Mary's Time Spent Exercising Sun
4 answers
asked by
5STARZ.VONN
176 views
use the following set of data for 1-2. 19, 18, 23, 24, 31, 32, 16
3 answers
asked by
wikdkitten
57 views
The stem-and-leaf plot shown displays the weights, in pounds, of the dogs in an animal rescue center.
What is the median weight
1 answer
asked by
Anonymous
279 views
If the height of 200 students is normally distributed with mean of 65 inches & std deviation 3.5 inches. How many students have
3 answers
asked by
Anonymous
191 views
The scores on a standardized test are Normal with mean = 50 and sd = 10.
a) What peoportion of scores falls less than 65? b) What
1 answer
asked by
far
342 views
Over 10,000 runners competed in a large urban marathon. The times of the runners follow a normal distribution. Using the
3 answers
asked by
abuahmed
261 views
A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and
3 answers
asked by
Jorel Rosaldo
334 views
The weights of 10 boxes of a children brand of cereal have a mean content of 278 grams with an S.D of 9.64 grams. If these boxes
3 answers
asked by
mwk please help
667 views
You would like to determine the percentage of coffee drinkers in your university, and collected the following binary data set
3 answers
asked by
Bob
836 views
Identify any outliers in the following data set by first calculating the median and the interquartile range.
Number of texts sent
4 answers
asked by
anon
584 views
You interview your family members at a picnic and record their ages and shoe sizes. The data is shown in the table. Which number
13 answers
asked by
Anonymous
2,995 views
Automobile repair costs continue to rise with the average cost now at $367 per repair (U.S. News & World Report website, January
3 answers
asked by
Anonymous
4,690 views
Explain how it is possible for two sets of data to consist of different numbers but have the same mean, the same median, and the
3 answers
asked by
Anonymous
354 views
The raw data below represents the number of children living at home in a neighborhood of 24 homes. Which measure best describes
4 answers
asked by
Asa
495 views
Question 1 - Use the dataset InkjetPrinters.txt to answer the following questions:
Data was collected on a sample of 20 different
2 answers
asked by
Bo
1,155 views
1.What are the mean,median,mode and range of the data set given the altitude of lakes in feet:-9,-36,-23,-8,-17,-52,-27,and-36?
2
2 answers
asked by
PLEASE HELP ME ASAP
222 views
Assume the weights of Farmer Carl's potatoes are normally distributed with a mean of 7.0 ounces and a standard deviation of 1.3
4 answers
asked by
Kiki
1,452 views
-The following data give the 2010 gross domestic product (in billions of dollars) for all 50 states. (Source: Bureau of Economic
1 answer
asked by
emam
460 views
The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics were calculated.
mean = 160
3 answers
asked by
Ana
2,360 views
Please check my responses! ASAP
Consider the following data set: 3,4,6,7,9,9,11 If 5 were added to each of the values, how would
2 answers
asked by
Kara
1,281 views
Q: The mean annual salary for a sample of electrical engineers is $83,500, with a standard deviation
The mean annual salary for a
3 answers
asked by
zeenia
1,124 views
2. High density lipoprotein (HDL) in healthy males follows a normal distribution with a mean of 50 and a standard deviation of
2 answers
asked by
mary
1,349 views
Convert Ken's chest, waist, and hips measurements to z-scores. Which of these measures appears to be the most different from
4 answers
asked by
zan
934 views
The heights of young American women, in inches, are normally distributed with mean mu and standard deviation 2.4 (sigma). I
3 answers
asked by
kim
3,129 views
The stem-and-leaf plot
shows the heights in centimeters of Teddy Bear sunflowers grown in two different types of soil. Soil A
9 answers
asked by
moby
1,323 views
The average for the statistics exam was 72 and the standard deviation was 4. Kelsey was told by the instructor that she scored
3 answers
asked by
Anonymous
1,116 views
In the following two questions, identify which choices would be considered inferential statistics and which would be considered
4 answers
asked by
kitty
918 views
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