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Standard Deviation
Page 4
Questions (254)
An unfair coin with Pr[H]=0.25 is flipped 95 times. A random variable X is defined as the number of heads that occur. Find the
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asked by
Tiffany
451 views
What is the standard deviation of the following test scores? Round your answer to the nearest hundredth.
82, 76, 93, 82, 73, 80
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asked by
qui
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The scores on a standardized test are normally distributed with a mean of 100 and standard deviation of 10. What test score is
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A company manufactures televisions in batches of 25 and there is a one percent rate of defects. Find the standard deviation for
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Complete the statement "z = " for each data value.
a. A data value 0.2 standard deviation below the mean. b. A data value 1.4
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a. A data value 2.6 standard deviations below the mean.
b. A data value 0.2 standard deviation below the mean. c. A data value
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Arthur Dent's biology class had a standard deviation of 2.4 on a test, while Ford Prefect's class had a standard deviation of
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Complete the statement "z = " for each data value.
a. A data value 3 standard deviations below the mean. b. A data value 2.6
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Complete the statement "z = " for each data value.
a. A data value 2 standard deviations below the mean. b. A data value 0.8
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77, 45, 72, 56, 98, 60, 70, 89, 50, 80, 95, 70, 34, 77, 65, 70, 70, 82, 86, 86
Part 1: Find the standard deviation of the scores.
9 answers
asked by
Tanyashand
63 views
77, 45, 72, 56, 98, 60, 70, 89, 50, 80, 95, 70, 34, 77, 65, 70, 70, 82, 86, 86
Part 1: Find the standard deviation of the scores.
1 answer
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Tanyashand
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A set of data has 68.4% of the data within one standard deviation of the mean. 94.6% of the data is within two standard
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Select the list of data items that are included within one standard deviation of the mean from this data set.
Data set:
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For the following data set, calculate the percentage of data points that fall within one standard deviation of the mean and
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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,
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sheep
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3 Complete the table and determine the standard deviation of the ten items listed, correct to
two decimal places. σ2 = ∑(x -
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The standard deviation of a simple random sample of 15 customer waiting times is found to be 4.8 minutes. Find the test
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30
20 10 10 10 15 10 20 15 20 10 20 10 95 10 20 10 11 10 12 calcualte standard deviation
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Multiple Choice Question
What is the standard deviation of the given data set? Round to the nearest tenth. 5, 10, 7, 12, 0, 20,
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yo know there is two type of standard deviation can you tell when to use this or that
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In general, if you have data from the entire population, you should use population standard deviation. If you have data from a
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Value −3 −2 −1 0 1 Total Observations 1 2 3 2 1 Calculate the standard deviation of the dataset. Round the answer to the
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Standard deviation for site A was 18.4 and Site B 24.77 as seen very values are the same or close to the mean suggest that the
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15 views
The frequency table below shows the percentages obtained in a Biometry test for a random sample of 60 students:
Interval fi xi F
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To calculate the standard deviation (represented by the symbol σ),
1. Calculate the mean (add up the measurements for each
11 answers
asked by
math
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Susan keeps track of the number of tickets sold for each play presented at the community theater. Within how many standard
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The graph below displays how many pieces of candy Timmy and his five friends each received last Halloween. Within how many
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The graph below displays how many pieces of candy Timmy and his five friends each received last Halloween. Within how many
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Kaite Marie
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The graph below displays how many pieces of candy Timmy and his five friends each received last Halloween. Within how many
1 answer
asked by
Kaite Marie
14 views
The test scores for a math class are shown below.
81, 85, 82, 93, 85, 84, 95, 87, 88, 91 What is the standard deviation of the
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19 views
Determine if each of the following scenarios is possible. c. A data set has a negative standard deviation.
Possible Not Possible
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Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey
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15 views
Use the table to answer the question.
Value 4 5 6 Total Observations 1 3 1 Calculate the standard deviation of the data set.
9 answers
asked by
e
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2
Mrs. Jones Algebra 2 class scored very well on yesterday's quiz. With one exception, everyone received an A. Within how many
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asked by
J
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Be sure you are writing out your steps. You will have to submit your shown work for
each problem at the end Standard Deviation.
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asked by
J
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Be sure you are writing out your steps. You will have to submit your shown work for
each problem at the end Standard Deviation.
1 answer
asked by
J
21 views
Standard Deviation. Find the standard deviation of the following set of data. You must fill out the table and show the ending
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Kanesha has just calculated the standard deviation of a data set. To do this, what did she MOST likely subtract from each data
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Mrs. Smith's Algebra 2 class scored very well on the last quiz. With one exception, everyone received an A. Within how many
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19 views
Mrs. Smith's Algebra 2 class scored very well on the last quiz. With one exception, everyone received an A. Within how many
1 answer
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anonymous
15 views
Question
Which statement most closely describes what the standard deviation of a distribution represents?(1 point) Responses The
9 answers
asked by
hi
26 views
Use the image to answer the question.
A histogram is shown. From left to right, the horizontal axis has numbers from 2 to 38 in
1 answer
asked by
Anonymous
7 views
Which statement most closely describes what the standard deviation of a distribution represents?(1 point)
Responses The standard
1 answer
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Anonymous
18 views
For the following set of data, find the sample standard deviation, to the nearest hundredth. 40, 86, 79, 25, 75, 67, 86, 38 40,
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8 views
For the following set of data, find the population standard deviation, to the nearest thousandth.
Data Frequency 1717 22 2222 33
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For the following set of data, find the sample standard deviation, to the nearest hundredth. 40, 86, 79, 25, 75, 67, 86, 38
1 answer
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6 views
For the following set of data, find the population standard deviation, to the nearest hundredth.
Data Frequency 14 55 15 66 17 88
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9 views
For the following set of data, find the population standard deviation, to the nearest hundredth.
Data Frequency 14 55 15 66 17 88
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10 views
For the following set of data, find the sample standard deviation, to the nearest thousandth.
Data Frequency 33 88 44 11 55 55 77
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8 views
For the following set of data, find the population standard deviation, to the nearest thousandth.
101, 79, 117, 99, 96, 112, 87,
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10 views
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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