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[DOCX File]Probability: What Affects Estimates
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How do you find the expected value and standard deviation of a binomial random variable? In the binomial distribution, what do parameters n and p represent? What is meant by ? In the formula , what does n represent? What does k represent? What does the value of represent? When can we use the Normal model to estimate Binomial probabilities?
how to find standard deviation of x

[DOC File]The Practice of Statistics
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3.Suppose that you give the NAEP test to an SRS of 1000 people from a large population in which the scores have mean of 280 and standard deviation of =60. The mean of the 1000 scores will vary if you take repeated samples. A. The sampling distribution of is approximately normal. What are its mean and standard deviation?
how to calculate the std deviation

[DOCX File]Notes 8.3: Confidence Intervals with Means
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How do you find the standard deviation by hand? How do you find probabilities from the graph of a probability distribution? What is a density curve/histogram? What is required for a random variable to have a binomial distribution? Give an example of a binomial experiment. Show how it meets the criteria.
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Standard deviation: calculating step by step (article) | Khan Academy
Find the standard deviation. ∑ = add together. First, you need to determine the mean. The mean of a list of numbers is the sum of those numbers divided by the quantity of items in the list (read: add all the numbers up and divide by how many there are).
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[DOC File]MEASURES OF SPREAD IN DATA
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1. The formula for the standard deviation, S(SD), is on the right: Identify what each of the following parts of the formula mean by explaining it in words. (a) n (b) x (c) ∑ (d) A name for the quantity n –1 is . 2. Consider the two figures. Each shows a distribution of data with a mean, x, of 5. Which has a bigger standard deviation and why?
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[DOC File]Deviation and Standard Deviation
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Find the mean. Find the standard deviation. What can be said about the entry of 52 hours/week? Calculate the standard deviation again without the 52 hours/week entry. The sale prices of the last 10 homes sold in . 1985. were: $198 000, $185 000, $205 200, $225 300, $206 700, $201 850, $200 000, $189 000, $192 100, $200 400.
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[DOCX File]Binomial, Geometric, and Normal Distributions
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Find the mean and population standard deviation (Say you use L1 to do this). Record it in the table below. 2. Find the mean & standard deviation for each new data set in a–c. (a) Add 8 to every number in the data set. (An easy way to do this is to set L2 equal to L1+8) (b) Add 23 to every number in the data set (start with the original data set).
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[DOC File]Determining Mean, Median, Mode, & Standard Deviation
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"standard deviation". Supposedly, the standard deviation tells us the size of a typical deviation from the mean for a particular set of data. Based on your answers to #4, guess at the value of the standard deviation. _____ Then take a guess as to how you think this value is might be calculated. Part Three. Here is how the standard deviation is ...
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[DOCX File]Weebly
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For each student, find the standard deviation of the proportion of heads in the student’s 20 samples. Put the result in Column W. (Use =STDEV(array) or =STDEV.S(array). Nothing to hand in here.) Suppose one student had a biased coin. Which student do you think it was? Explain how you chose.
how to find standard deviation of x

[DOCX File]AP BIOLOGY--LAWNDALE HS - Home
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= x̅ + (z*) (standard deviation of statistic) The formula for the standard deviation is calculated based on the sample size. The larger the sample size, the smaller the spread.
how to calculate the std deviation

How do you find the standard deviation