What are the three value to indicate variability of a data set How do you determine whether it is one- tailed or two-tailed test?

Q: What statistical analysis correctly analyzes the independent measure ( also known as in between…

A: Here we can say that for independent measures we use t-test for one sample and t-test for two…

Q: Explain the significance of the mean, variance, and standard deviation for a random variable. Do the…

A: Significance of mean, standard deviation and variance is – Mean: it implies average and the sum of…

Q: Why do we need to study the variation of a collection of data? 'Why isn't the average by itself…

A: Note:-Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: How do I interpret the mean 12.5 and the median 12.5 and explain how the mean and the median each…

A: Given: Mean=12.5Median=12.5

Q: How are the standard deviation and variance related to each other?

A: Hi! Thank you for posting the question. Since you have posted multiple questions, we are answering…

Q: What are the reasons why you should learn statistics? Do you think that learning statistics will…

A: There are few reasons you should learn statistics - 1. The first reason would be you effectively…

Q: What does this information tell you about the variability of student's performance on the prelims?…

A:

Q: FOR ESTIMATION OF PARAMETERS IN STATISTICS: What are the Types of Estimates? How to estimate a Mean?

A: In Estimation of Parameter in statistics there are two types of estimation, i. Point Estimation  ii.…

Q: single term that best describes statistics and why?

A: A statistic is the measure of an attribute computed from a sample. The statistics calculated from…

Q: What aspect does the repeated measure test decrease when compared to an independent t test?

A: Two samples are said to be independent if the sample values selected from one population are not…

Q: Why correlation between the predicted and actual scores will be positive?

A: When two variables move in same direction, then it indicates that there is positive correlation…

Q: the variance of a data set is 144 and mean is 72 then coefficient of variance is

A: Given,variance(σ2)=144mean(x¯)=72

Q: The coefficient of variation is the same as the variance O a measure of central tendency a measure…

A:

Q: In Week 1, you were asked to analyze the use of statistics in health care. Now that you have…

A: Bio-statistics is a branch of statistics which deals with the health care and medicine. It is also…

Q: What does this information tell you about the variability of the student's performance on the…

A: Given The data is as follows:

Q: What is the value of the test statistic, F?

A:

Q: Explain the three major sources of error variance related to reliability. Provide an example of a…

A: Reliability refers to the consistency in test outcomes of a measure under similar conditions.

Q: explain the variability that happens during normal distribution and why it happens.

A:

Q: What statistical calculation, which results in the same units as the measured data, represents the…

A: Introduction: For a random variable X taking n sample values, the sample variance is given by the…

Q: Medical researchers want to know if Tylenol, Advil, Ibuprofen, and Aleve different medications lead…

A: Researchers use one-way ANOVA to address research hypotheses related to difference.

Q: Why are t statistics more variable than z -scores?

A: t-statistics uses sample variance instead of population variance.   t statistics has both s and x̅.

Q: What aspect does the repeated measure test decrease when compared to an independent to test?

A: Given: The repeated measure that results in decreasing the measure test based on comparing with an…

Q: Sample mean is more sensitive to outliers in the data compared with the median True False

A: Since we know that very basics diffrence between mean and median is that mean is more sensitive to…

Q: Why do the study on the data variability is called as the complementary to the study on central…

A: Central tendency is the tendency of the quantitative data set to cluster around the some central…

Q: Describe the sources of within groups variance. How does within groups variance affect the range of…

A: Given information: It is required to describe the sources of within groups variance.

Q: Should be consider this score unusual? What is the value of the test statistic?

A:

Q: Give examples of at least two pairs of data that will most likely yield different variance and…

A: The answer to the above question is as follows :

Q: What are the steps for a hypothesis test for population mean when the variance is known?

A: Given the variance for hypothesis test for population , To write the steps for the hypothesis test…

Q: How do you find variance with only the standard deviation and number of values?How do you find…

A: Variance is square of standard deviation. So, if you are given standard deviation, then simply…

Q: Describe when you would use an analysis of variance versus an independent samples t-test.

A: Analysis of variance (ANOVA) is used when we have more than two independent samples whereas…

Q: The varaibility of a statistic is described by

A: The variability means the spread ness of the data set. The best measure of spread ness is standard…

Q: What does it mean when a score is in the tail of a distribution?

A: The distribution in statistics or probability is the shape in which the data behaves when plotted.…

Q: For an analysis of variance, "two-way" refers to the direction that traffic should follow on the…

A: In this case, we need to identify the correct option for the given statement.

Q: The distribution of internalizing behavior as measured by the Child Behavior Checklist is normal…

A: It is given that the mean is 50 and the variance is 100.

Q: How does changing from two-tailed test to one-tailed test increases power of a statistical test?

A: Given: Hypothesis test changed from a one-tailed test to a two tailed test as given in the question.…

Q: What statistic compares the variability between three or more group means with the variance of…

A: ANS#18- What statistic compares the variability between three or more group means with the variance…

Q: Different techniques in describing the data using measures of central tendency and measures of…

A: Measure of central tendency-  It  is a single value  defines  a set of data by choosing the central…

Q: What are the differences between correlation, regression, multiple correlation and multiple…

A: Correlation and Regression are a part of Statistics.

Q: importance of mean and variance of random variable

A: Mean: This is the measure of central tendency and which define as the average of all observations.…

Q: Best way to explain the difference between variance and standard deviation?

A:

Q: true or false MSBetween represents the variability that is only affected by unsystematic factors.

A: The statement is not true.

Q: We have to compare the result of all variables using range,interquatile range,variance and standard…

A: As asked, for the given data we have to compare the result of all variables using the range,…

Q: How does Measures of Position differ from Measures of Central Tendency and Variability? Explain the…

A: The method that returns the position of a particular data value within a given data set is…

Q: For this research situation, what statistical procedure would most likely be used to answer the…

A: Dependent 't' test : The paired t-test, commonly known as the paired-samples t-test, is a type of…

Q: What statistical tool should I use for this problem?  A graduating nursing student conducted a…

A: Test of proportion It is used to test which group have more contribution then the other. Suppose…

Q: When we describe our data, we list three basic properties of the frequency distribution. Om The…

A: It is an important part of statistics. It is widely used.

Q: A researcher is studying psychological factors in artistic achievement among teenage girls. One…

A: The measure of variability or dispersion determines the spread of data. In other words, variability…