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Q: Removing the subjective element from a measure may increase validity. True False

A: Removing the subjective element from a measure will increase reliability

Q: What are the statistical tools use in descriptive and inferential statistics?

A: Descriptive statistics allow you to characterize your data based on its properties. There are four…

Q: A survey research is a tool used by businesses to obtain feedback from their customers, suppliers or…

A: A survey research is a tool used by businesses to obtain feedback from their customers, suppliers or…

Q: what is an example of test measure for validity?

A: Mathematically, the validity coefficient measures the validity of a test which is related to…

Q: Does the one observed sample mean qualify as a common or a rare outcome? Explain.

A: Sample mean qualify as a common outcome if the difference between the sample mean and the actual or…

Q: What is statistics, how do you think statistics can be helpful in ours lives. Think of an area of…

A: Statistics is a science which deals with the collection, classification, presentation, comparison…

Q: Why do we want to avoid bias when collecting data?

A: Bias : It is any trend or deviation from the truth in data collection, data analysis, interpretation…

Q: (a) What are the null hypothesis H. and the alternative hypothesis H, that should be used for μ the…

A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…

Q: What are two reasons that some people in the field believe significance testing should be banned?…

A: Here we want to discuss reasons that some people in the field believe significance testing should be…

Q: Would observations or interviews be more appropriate to research the following topic? What motivates…

A: Topic : What motivates drug users to Stop using drugs

Q: What is an ethical weakness of official stats?

A: Official statistics are a major source of secondary data. The term refers to any set of data…

Q: Describe about The power of a hypothesis test.

A: The likelihood that a Type II error is not committed is called the power of a hypothesis test. The…

Q: Why doesn't it make sense to test the hypothesis that the sample mean is 42?

A: It is given that the hypothesis test is sample mean is 42.

Q: Tabular method for simultaneously summarizing the data for two categorical variables is called…

A:

Q: Let Z1, Z2..., Z6o be independent observations from a distribution Z which is not normal. Suppose it…

A: Since you have posted a multiple questions, we will solve the first complete question and request…

Q: 14, 18, 5, 7, 12, 9, 10, 15, 11, 9 Мean Median Mode

A: Solution

Q: 2 A dog kennel has 120 dogs. The ages of the dogs, in order, are shown below. 1, 1, 1, 1, 1, 1, 1.…

A: It is a multiple question. But you have requested 2 and 3 questions. We will answer these 2…

Q: What is the difference between the types of data 1- categorical data, 2- numerical data, with an…

A: In statistics, various types of data are studied. There are two types of data that are mainly…

Q: what is the distribution of sample means exactly? Why are sample characteristics important in…

A: As per central limit theorem- The distribution of sample means, also known as the sampling…

Q: How to identify Mode, median, and mean in positively and negatively skeweddistributions?

A:

Q: This review problem has me stuck. I know I'm doing a "paired differences" test but I'm not…

A: The conditions that needed to be met are, The sample must be random and it should represent the…

Q: the school academics department wants  to survey there school children on a variety of topics .which…

A: the school academics department wants  to survey there school children on a variety of topics .which…

Q: Discuss the advantage of sampling

A: We need to discuss the advantages of sampling.

Q: find mean  and mode 2,5,6,8,6,2,7,8,5,4

A: In statistics, three measures of central tendency are widely used. These three measures are also…

Q: It is a type of statistics wherein the method used to determine something about a population is…

A: Given problem Given that   It is a type of statistics wherein the method used to determine…

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.