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Why it is important to determine the shape of data distribution before computing descriptive statistics?
Wiki User
∙ 10y ago
You may be most familiar with the normal distribution (the Bell-shaped curve). The mean, mode and median of this distribution are all the same because it is symmetric. If, however, you take a sample from a distribution that is asymmetric in some way then the mean, mode and median will differ. You would need to decide which of these more effectively characterises the population. Then you would compute that descriptive statistic.
Wiki User
∙ 10y ago
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Short notes with examples to explain you discriptive statistics ii inferential statistics?
Descriptive statistics give information regarding a data set. For example, any graph, the mean, median, and mode, standard deviation, range, and variance are all descriptive statistics. Inferential statistics is using a representative sample from a population to say something about that population. For example, for presidential polls, not everyone in the country is called and asked who they plan to vote for. Whoever does the surveying picks a sample that should fairly represent the population as a whole, and just asks those people. Depending on the sample size, the surveyor can then determine how accurate the results are, and use them to generalize to the population as a whole.
Why do univariate distributions matter in terms of social science and statistics why should we graph univariate distribution before we numerically summarize them?
Not all univariate data will be normally distributed. Graphing the data will help you determine if you got the kind of distribution you were expecting, and if not, what kinds of tests will be appropriate for what you got. A strange distribution when you had reason to expect, say, a normal distribution would help you uncover possible problems with data collection.
How can one determine the median from a graph?
The answer depends on what the graph is of: the distribution function or the cumulative distribution function.
What variables determine the worldwide distribution of corals?
the can suck my dic
What is the importance of statistics to a teacher?
Statistics help a teacher know when the job is getting done. They can use them to determine if the class understands the material or if they need to cover more of it.
Why it is important to find the shape of data distribution before computing descriptive statistics?
to help determine and give insight into the data colleced.
Is the mean and standard deviation used in the following descriptive statistics to determine the curve of a normal distribution?
It is impossible to answer the question because "the following" did not follow.
What are the applications of statistics in marketing?
Marketers use statistics to determine how to market their products. With statistics, they can determine who is more likely to purchase their goods.
Short notes with examples to explain you discriptive statistics ii inferential statistics?
Descriptive statistics give information regarding a data set. For example, any graph, the mean, median, and mode, standard deviation, range, and variance are all descriptive statistics. Inferential statistics is using a representative sample from a population to say something about that population. For example, for presidential polls, not everyone in the country is called and asked who they plan to vote for. Whoever does the surveying picks a sample that should fairly represent the population as a whole, and just asks those people. Depending on the sample size, the surveyor can then determine how accurate the results are, and use them to generalize to the population as a whole.
What is netstat used for in terms of computing?
Netstat is a command-line tool that displays network connections and a number of network interface and network protocol statistics. It is used to find problems on networks and determine how traffic effects performance.
Why do univariate distributions matter in terms of social science and statistics why should we graph univariate distribution before we numerically summarize them?
Not all univariate data will be normally distributed. Graphing the data will help you determine if you got the kind of distribution you were expecting, and if not, what kinds of tests will be appropriate for what you got. A strange distribution when you had reason to expect, say, a normal distribution would help you uncover possible problems with data collection.
What is the need for heartbeat monitoring?
To determine vital statistics.
Scope of statistics?
Statistics is analyzing numbers. Businesses use statistics so that they can determine the best way to approach various aspects of business.
How can one determine the median from a graph?
The answer depends on what the graph is of: the distribution function or the cumulative distribution function.
What is the difference between descriptive and inferential?
Both descriptive and inferential statistics look at a sample from some population.The difference between descriptive and inferential statistics is in what they do with that sample:Descriptive statistics aims to summarize the sample using statistical measures, such as average, median, standard deviation etc. For example, if we look at a basketball team's game scores over a year, we can calculate the average score, variance etc. and get a description (a statistical profile) for that team.Inferential statistics aims to draw conclusions about the population from the sample at hand. For example, it may try to infer the success rate of a drug in treating high temperature, by taking a sample of patients, giving them the drug, and estimating the rate of effectiveness in the population using the rate of effectiveness in the sample.Please see the related links for more details.All statistical tests are part of Inferential analysis; there are no tests conducted in Descriptive analysis· Descriptive analysis- describes the sample's characteristics using…o Metric- ex. sample mean, standard deviation or varianceo Non-metric variables- ex. median, mode, frequencies & elaborate on zero-order relationshipso Use Excel to help determine these sample characteristics· Inferential Analysis- draws conclusions about populationo Types of errorso Issues related to null and alternate hypotheseso Steps in the Hypothesis Testing Procedureo Specific statistical tests
How do scientists determine the distribution of organisms in an environment?
they test
Are statistics used in financial Formulas?
Yes, statistics are used in financial formulas if they are available. The integrity and accuracy of the statistics determine if they are chosen to be used in the first place.
