Questions LLC
Login
or
Sign Up
Ask a New Question
Standard Deviation
Page 2
Questions (252)
If a have calculated 2 standard deviations from a sample of for example 25 day duration in a hospital for 2 groups ( 1 group was
1 answer
asked by
maria
415 views
I pick a. Is it correct?
Which of the following measurements is likely to have the least variation (the smallest standard
2 answers
asked by
Lucy
747 views
Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I
1 answer
asked by
Chris
486 views
Find the standard deviation of the sample data set. 51 64 35 74 42 62 34 39 52 77 (1 point) Responses 3.8 3.8 15.7 15.7 247.3
3 answers
asked anonymously
54 views
A set of data with a mean of 64 and a standard deviation of 5.9 is normally distributed. What value is within +3 standard
1 answer
asked by
Samantha
362 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
909 views
Ten percent of Americans adults are left-handed. A statistics class has 50 students in attendance.
Find the standard deviation
1 answer
asked by
Lizzy
645 views
using empirical formula a company is studying the number of daily debit card purchases. THere were 20 purchases and the
2 answers
asked by
Anonymous
574 views
The scores on a chemistry test are normally distributed. Approximately 95 percent of the scores fell between 78 and 92. What is
2 answers
asked by
caroline
500 views
This is a standard deviation question.
I don't know much about standard deviation. Here it goes... Teachers making 30,000 to
2 answers
asked by
tanisha
563 views
What is the standard deviation of the given data set? Round to the nearest tenth.
5, 10, 7, 12, 0, 20, 15, 22, 8, 2 A 6 B 6.89 C
5 answers
asked anonymously
44 views
Joes test score was 450(1 standard deviation below the population mean550) A good guess for Joes test score is
1 answer
asked by
ben
371 views
For a normal curve, what percentage of values falls beyond two standard deviations from the mean?
3 answers
asked by
bob
530 views
There are 100 questions from an SAT test, and they are all multiple choice with possible answers of a,b,c,d,e. For each
2 answers
asked by
Confused
938 views
how do you get a standard deviation of 1.04563 when the sum of x=238, n=25 and the mean is 9.52
3 answers
asked by
tangela
279 views
Consider the following set of data.
Pairs 1 2 3 4 5 Sample A 2 8 7 9 2 Sample B 7 8 1 1 8 Find the standard deviation sd of the
1 answer
asked by
Tommy8
348 views
A population has a standard deviation ó of 28 units. (Give your answers correct to two decimal places.)
(a) Find the standard
1 answer
asked by
Sue 71
946 views
The standard deviations s for the annual medical costs 30 heart disease patients was found to equal $1005. Find a 95 %
5 answers
asked by
chris
586 views
Susan keeps track of the number of tickets sold for each play presented at the community theater. Within how many standard
4 answers
asked by
Lea
1,301 views
I have a 6 sided dice with numbers 1 to 6 written on faces.
What number(s) would have to show up if you rolled the die five times
1 answer
asked by
Bonnie
465 views
I have a 6 sided dice with numbers 1 to 6 written on faces.
What number(s) would have to show up if you rolled the die five times
1 answer
asked by
Bonnie
474 views
Why must you square the deviation scores when computing a standard deviation using the definitional formula?
Why is the
1 answer
asked by
kelly
432 views
Calculate the standard deviation for the following yields of corn: 142, 161, 132, 143, 147, 145, 146, and 152 bu/ac.
Are all
1 answer
asked by
LUA
460 views
Calculate the standard deviation for the following yields of corn: 142, 161, 132, 143, 147, 145, 146, and 152 bu/ac.
Are all
1 answer
asked by
LUA
409 views
If X is a normal random variable with mean 11, and if the probability that X is less than 12.10 is .72 , then what is the
3 answers
asked by
Alia
532 views
Your mathematics instructor claims that, over the years, 88% of his students have said that math is their favorite subject. In
2 answers
asked by
Oops
1,065 views
Consider the following test scores obtained by a class.
Test score 90 80 70 60 50 Frequency 1 4 11 6 2 Find the standard
2 answers
asked by
Debin
617 views
A candy machine distributor collects the coins from 100 machines. The standard deviation is $3.25. With probability 98%, what is
3 answers
asked by
Heather
322 views
Given the values of n=5, p= 0.15, and (1-p)=0.85, calculate the standard deviation of the data.
3 answers
asked by
Georgia
329 views
In the standard deviation, the decimal place of the first non-zero digit indicates where the precision of the average ends
1 answer
asked by
Sonia
369 views
2. The standard deviation of the number of tosses required to get a 1 when a balanced dice is tossed repeatedly is equal to
Choos
1 answer
asked by
Arun
287 views
sample of n=5 scores
(8,0,7,5,5) make an estimate of the standard deviation by finding average distance of the smallest and
1 answer
asked by
juan777
299 views
You are allowed to choose four whole numbers from 1 to 10 (including 1 and
10). You can only choose each number once though.
2 answers
asked by
Nikki
523 views
the standard deviation of the sampling distribution of the means is ____the standard deviation of the population under study.
2 answers
asked by
tim
522 views
Each of 2 players, independently, play a game 5 times, with each game having probability of success 0.40. What is the standard
1 answer
asked by
Jay
462 views
5. Give the standard deviation for the mean and median column. Compare these and be sure to identify which has the least
2 answers
asked by
Hope
520 views
σ = sqrt [ σ2 ] = sqrt [ Σ ( Xi - μ )2 / N ]
1 answer
asked by
Anonymous
290 views
For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of
1 answer
asked by
Dawn
450 views
My homework has a list of numbers and I'm working with standard deviation. I know the standard deviation as well as the mean and
1 answer
asked by
Justin
455 views
For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of
1 answer
asked by
net
477 views
For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of
1 answer
asked by
smith
383 views
With a mean of 72, and SD of 10 of High temprature:
Temprature of 93 is how many SD above mean? Temprature of 54 is how many SD
1 answer
asked by
jenny
386 views
Let's assume there are 3 people in Room A and another 3 people in Room B. The ages of the people in Room A are 25, 25, and 25.
2 answers
asked by
carol
886 views
With a relative standard deviation of 32.51+_ 0.15. Cant the result of 32.14 and 32.75 be discarded because they are out of the
1 answer
asked by
London
364 views
if the probability of a dribbling drummer is .38, find the standard deviation of the dribbling drummers drumming for the twelve
1 answer
asked by
Belle
487 views
Team A and B play 13 games of chess of which 6 are won by A, 4 are won by B and 3 end in a draw. They agree to play a tournament
3 answers
asked anonymously
45 views
I wanted to know is this a sample or population. I want to solve for the standard deviation, but I am not sure what it is.
1 answer
asked by
sue
352 views
A sample of 12 measurements has a mean of 24 and a standard deviation of 4.5. Suppose that the sample is enlarged to 14
3 answers
asked by
JT
820 views
a teacher teaches two sections (A and B) of a class. Both sections have a mean score of 75. Section A only has 5 students and
2 answers
asked by
Andrea
892 views
1) How many SD's?
a) 5.7 = 2 SD b) 235.12 = 5 SD c) 8.07 = 3 SD d) 0.0032 = 2 SD e) 0.0150 = 3 SD f) 1.39x10^5 = 3 SD g) 15.200 =
4 answers
asked by
Anonymous
469 views
Pages
1
2
3
4
5
6
Parent Categories (23)
Assessments and Grading
Binomial distribution
Confidence Interval
Confidence intervals
Data Analysis
Descriptive Statistics
Hypothesis Testing
Measures of Central Tendency
Measures of Central Tendency & Dispersion
Measures of Central Tendency and Dispersion
Measures of central tendency and variability
Measures of Central Tendency and Variation
Measures of Variability
Measures of Variation
Normal Distribution
Probability
Probability and Sampling
Probability and Statistics
Probability Distribution
Probability Theory
Random Variables
Sampling Methods
Statistics