# Statisticshelper.com how to use, tutorial

### Statistics Helper - Statistics Helper

**Details: **Table of Contents Using the Standard Deviation CalculatorWhat’s the Standard Deviation?What Does a Large Standard Deviation Imply?Income Example – Comparing Two CitiesSymbol For the Standard DeviationStandard Deviation for No VariabilityUnits Used for the Standard DeviationWhat is the Variance?Applying the Standard Deviation and Variance FormulasPopulation Variance Formula and Sample

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### How To Use the Z-Table to Find Area and Z-Scores

**Details: **In this article, I’ll walk you through how to use the z-table, or z-score table. The z-table is a chart of numbers that we use to identify the area under the normal curve to the left of a z-score.

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### Raw Score Calculator with a Step by - Statistics Helper

**Details: **This raw score calculator will find a raw score given a z-score, mean, and standard deviation. Enter the three values, then you will get an answer and step-by-step explanation on how you can convert a z-score to a raw score yourself.

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### Outlier Calculator with Easy Step-by-Step Solution

**Details: **Solution: The interquartile range, IQR, is the difference between Q3 and Q1. In this data set, Q3 is 684 and Q1 is 552. Subtract Q1, 552, from Q3, 684.

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### Binomial Distribution Calculator with a Step By Step

**Details: **Solution: The mean of the binomial distribution is interpreted as the mean number of successes for the distribution. To find the mean, use the formula $$ \mu = n \cdot p $$ where n is the number of trials and p is the probability of success on a single trial.

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### Empirical Rule Calculator with Easy Step-by-Step Solution

**Details: **Solution: The first part of the empirical rule states that 68% of the data values will fall within 1 standard deviation of the mean. To calculate "within 1 standard deviation," you need to subtract 1 standard deviation from the mean, then add 1 standard deviation to the mean.

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### Percentile Formula Calculator with a Step-by-Step Solution

**Details: **The percentile formula calculator will find a score for a percentile in a data set. Then, you will get a step-by-step explanation on how to do it yourself.

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### Binomial Probability Calculator with a Step By Step

**Details: **Complete Binomial Distribution Table. If we apply the binomial probability formula, or a calculator's binomial probability distribution (PDF) function, to all possible values of X for 7 trials, we can construct a complete binomial distribution table.

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### Poisson Probability Calculator with a Step by Step

**Details: **The Poisson Probability Calculator can calculate the probability of an event occurring in a given time interval. Before using the calculator, you must know the average number of times the event occurs in the time interval.

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### Chebyshev's Theorem Calculator + Step-by-Step Solution

**Details: **Answer: 55.56%. For any shaped distribution, at least 55.56% of the data values will lie within 1.5 standard deviation(s) from the mean. That is, from 1.5 standard deviations below the mean to 1.5 standard deviations above the mean.

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### Z-Score Calculator with a Step-by-Step Solution

**Details: **The step-by-step z-score calculator calculates a z-score based on the z-score formula. First, enter values for the mean, standard deviation, and data value.

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### 5 Number Summary Calculator / Interquartile Range

**Details: **The 5 number summary calculator will show you a step by step way to find the min, Q1, median, Q3, and max values in a set. After finding Q1 and Q3, it will also find the interquartile range.

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### Poisson Distribution Calculator with a Step By Step

**Details: **The Poisson Distribution Calculator will construct a complete poisson distribution, and identify the mean and standard deviation. A poisson probability is the chance of an event occurring in a given time interval.

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### Percentile Rank Calculator with a Step-by-Step Solution

**Details: **The percentile rank calculator finds the percentile rank of a number in a data set. The percentile rank of a number is the percent of values that are equal or less than that number.

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### Standard Deviation Calculator with Step by Step Solution

**Details: **Example on How to Find the Standard Deviation and Variance. Let’s walk through how to find the standard deviation and variance for a small data set, given that the data set represents a sample of children’s heights.

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### Normal Distribution Calculator to Find Area, Probability

**Details: **The normal distribution calculator works like the TI 83/TI 84 normalCDF function. It finds area under the normal curve and answers probability questions.

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### Calculators Archives - Statistics Helper

**Details: **The percentile formula calculator will find the score for the…

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### How to Find a Z-Score with the Z-Score Formula

**Details: **I’ll show you how to find a z-score by using the z-score formula. I’ll guide you through a couple examples that provide a mean, standard deviation, and raw score and ask you to find a z-score.For background information on z-scores, see

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### What is a Z-Score? Why We Use Them and What They Mean

**Details: **In this article, I’ll answer the question “what is a z-score” and show you how we use them in statistics with a real world example. You can also check out the Z-Score Calculator and be guided through a solution for your problem. Or, have a look at How to Find a Z-Score for z-score examples and guided help. Relative Standing

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### Statistics Helper - Page 2 of 3 - Statistics Helper

**Details: **The percentile formula calculator will find the score for the desired percentile for a data set. First, enter the data set and desired percentile and you’ll get the answer. Then, you will get a step-by-step explanation on how to do it yourself. The desired percentile represents the percent of numbers in the data set that […]

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### Range, Standard Deviation, and Variance Calculator

**Details: **This range, standard deviation, and variance calculator finds the measures of variability for a sample or population. First, the calculator will give you a quick answer.

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### formula Archives - Statistics Helper - Statistics Helper

**Details: **The step-by-step z-score calculator calculates a z-score based on the z-score…

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### Mean Median Mode Calculator with an Easy Step-by-Step

**Details: **How to Use the Mean Median Mode Calculator. This mean median mode calculator finds the measures of central tendency. First, the calculator will give you an answer, and then it will guide you through a step-by-step solution to easily learn how to do the problem yourself.

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### Probability Archives - Statistics Helper

**Details: **Home; Statistics Calculators . Mean, Median, and Mode Calculator; Range, Standard Deviation, and Variance Calculator; Z-Score Calculator; Raw Score Calculator

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### Calculators Archives - Page 2 of 2 - Statistics Helper

**Details: **The step-by-step z-score calculator calculates a z-score based on the z-score…

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### mean Archives - Statistics Helper

**Details: **The step-by-step z-score calculator calculates a z-score based on the z-score…

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### Descriptive Statistics Archives - Statistics Helper

**Details: **Home; Statistics Calculators . Mean, Median, and Mode Calculator; Range, Standard Deviation, and Variance Calculator; Z-Score Calculator; Raw Score Calculator

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### Funny Math T-Shirts and Gear for Math Enthusiasts

**Details: **Check out our cute and funny math t-shirts and gear for math enthusiasts! All products are customizable at Zazzle.com. These items are perfect for the math lover in your life.

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### Statistics Helper - Page 3 of 3 - Statistics Helper

**Details: **Home; Statistics Calculators . Mean, Median, and Mode Calculator; Range, Standard Deviation, and Variance Calculator; Z-Score Calculator; Raw Score Calculator

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### standard deviation Archives - Statistics Helper

**Details: **The step-by-step z-score calculator calculates a z-score based on the z-score…

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### data value Archives - Statistics Helper

**Details: **The step-by-step z-score calculator calculates a z-score based on the z-score…

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### outlier Archives - Statistics Helper - Statistics Helper

**Details: **Home; Statistics Calculators . Mean, Median, and Mode Calculator; Range, Standard Deviation, and Variance Calculator; Z-Score Calculator; Raw Score Calculator

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### raw score Archives - Statistics Helper

**Details: **The step-by-step z-score calculator calculates a z-score based on the z-score…

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### Shopping Archives - Statistics Helper

**Details: **Check out our cute and funny math t-shirts and gear…

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### z-score Archives - Statistics Helper

**Details: **The step-by-step z-score calculator calculates a z-score based on the z-score…

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