ow can I change it to a representative sample

Q: What is the variance of a set of 6 numbers: 1, 2, 3, 4, 5, 6?

A: The variance is calculated as the average of the squared differences of each number from the mean.

Q: Explain in your own words the advantages of bigger random samples in a sample survey

A: Explain in your own words the advantages of bigger random samples in a sample survey

Q: How many ways are there to rearrange the letters in the word STATISTICS?

A: We have given the word STATISTICS We have to find a number of ways are there to rearrange the…

Q: How is a sample related to a​ population?

A: Population is set of all elements about which we want to know. While the sample is a part of such…

Q: The absolute difference between the population mean and the sample mean is called the

A:

Q: When we are comparing two sample means that are not the same group of individuals, what kind of test…

A: Given that  When we are comparing two sample means that are not the same group of individuals

Q: What do you mean by Random Sample?

A:

Q: How statistical tests are used?

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Q: Here is a sample data set. You may use StatCrunch or Excel to help you sort the data in order! 293…

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Q: How can you make your sampling method more reliable? (English Translation: List a way you could make…

A: Introduction: Sampling is done in practical life instead of a population census, in most of the…

Q: What is Sample?

A:

Q: ve bi

A: It would be better if we enquire with all students, when the strength of class students is little.…

Q: According to the Law of Large Numbers what effect will increasing the sample size have on the sample…

A: It is given that the sample size increases.

Q: Explain the EFFECT OF SAMPLE SIZE.

A: The size of our sample defines how much information we have and thus, in part, decides our precision…

Q: How do the sample mean and the population mean differ? What is the symbol for each type of mean?

A: Here we have to define  How do the sample mean and the population mean differ? and  What is the…

Q: Briefly explain how theory development might impact the selection of a sample.

A: Find: The theory development might impact the selection of a sample.

Q: Explain about if larger the sample size, what does this reflects.

A:

Q: How to decide one or Two Samples?

A: t-test:  (i) In the t-test, the sample size of 30 is large enough (n < 30) (ii) Samples are taken…

Q: How can I find the sample mean of these four scores ? 1,4,4,10

A: Given data, 1,4,4,10 sample mean(x)=?

Q: Blank are more representative of a population, but blank are easier to obtain

A: The sample is a set of units that is obtained from a population, which represents the population.…

Q: Describe the EFFECT OF SAMPLE SIZE.

A: In general, large sample size is required to get more precision of data. Sample size plays important…

Q: What is an example of a stratified sample? How can you tell when appropriate to use a stratified…

A: When the population is divided into small samples of interest then these are called strata and the…

Q: There are eight patients waiting in a doctor's waiting room.  They have been waiting for 9 minutes,…

A: We have given following data x : 9,2,5,4,12,7,8,11 We have to calculate the sample variance for the…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.