Is there truly a significant difference between the two data sets?

Q: What is a frequency distribution of qualitative data and why is it useful?

A: Frequency distribution: Sometimes an event will be occurred two or more times, the number of…

Q: Imagine a study comparing two groups:  undergrad vs. graduate students in terms of stress level.  To…

A: Provided that here is a study comparing two independent groups :  undergrad vs. graduate students in…

Q: Among the measures of center discussed, which is the only one appropriate for qualitative data?

A: Measures of center: Mean: The arithmetic mean (also called the mean) is the most commonly used…

Q: What is meant by an influential observation?

A: The definition of an influential observation is give bas follows:

Q: Based on the boxplot and descriptive statistics, which group shows more variability in narcissism…

A:

Q: If two different sets of data have the same range, does the variability for both sets have to be the…

A: Range:The range is the difference between the largest and smallest observations in a set of data.…

Q: What is the difference between independent samples and dependent samples?

A: Dependent samples: The two samples are said to be dependent if there exist an effect of one on…

Q: What does an extreme value at the high end of the data set mean?

A: The numerical data can be divided into two parts. One being discrete and other continuous. As the…

Q: What sorts of follow up questions about the statistics might you ask that person in order to obtain…

A: The validity of statement gives information about precise and exact results obtained from data.…

Q: What condition on a data set is required to apply the empirical rule?

A: The condition that required to apply the empirical rule is that the shape of the data should be…

Q: What data collection techniques are useful in case studies?

A: Given problem Given that   What data collection techniques are useful in case studies ?

Q: What are the conclusions of the study?

A: Parametric test is used to determine the mean significance between the sample and population when…

Q: Which kind of descriptive statistics can be included to summarize the quantitative data? if the…

A:

Q: When trying to summarize a set of numerical data, why is giving a measure of center such as the mean…

A: Introduction: A measure of central tendency of data is a measure of the tendency of the values to…

Q: What does The level of significance spotlights?

A: Level of significance is used in hypothesis testing. It is defined as the Type I error. The symbol…

Q: How to differentiate dependent and independent samples?

A: It is a subset of the population. In other words, it is a representative part of the population.

Q: Are these samples independent or paired?

A: When the two observations are taken on same individual then the samples are said to be paired.

Q: What is the lowest measure of central tendency and is used primarily for nominal data to identify…

A: We know there are mainly three measures of central tendency:Mean, mode and medianWe first know where…

Q: Why is it important to know what type of statistical test should be run before data is collected?

A: It is important know what statistical test should be run before data is collected to ensure data…

Q: What is the difference between a population and a sample? Which is described by a parameter and…

A: Determine the difference between the population and sample.   The difference between the population…

Q: why is the decline in cohort quality overestimated in cross-sectional data?

A:

Q: What is the relationship between a frequency or relativefrequency distribution of a quantitative…

A: Justification:Qualitative and quantitative data:Qualitative data are non-numerical measures such as…

Q: Why does the observed mean difference should not be taken seriously?

A: Mean difference(MD): Mean Difference is also known as Difference in means. Mean difference measures…

Q: What is the value of the sample correlation r?

A: It is given that Regression line : y = -3.05 + 0.10x Number of observations n = 13 Number of…

Q: The broad answers to questions in interviews, or from responses to open‐ended questions in a…

A: Survey is a method to collect data for a statistical study. The data obtained from the survey will…

Q: What does it mean that a sample statistic is an unbiased estimator of a population parameter?

A: A statistic is called an unbiased estimator of a population parameter if the mean of the sampling…

Q: It refers to an attribute or characteristic of a population. Parameter Sample Statistic Data

A: Given : An attribute or characteristic of a population.

Q: The primary difference between an experimental and observational study is:

A: In observational study, the data is collected based on observing the data of interest. In…

Q: If the difference in means of two data sets is not zero, does that imply that on average the two…

A: In this we need to find whether the difference in means of two data sets is not zero, the does it…

Q: what is the difference between grouped and ungrouped data?

A: Data can be classified as grouped data and ungrouped data.

Q: Why is it important to report both a measure of central tendency and variability to describe a set…

A: Basic idea about measures of central tendency and dispersion Measure of Central tendency is the…

Q: Which of the following is not a criterion for evaluating secondary data? *

A: Data is secondary when we don't collect it ourselves and work on a data collected by someone else.

Q: How are measures of central tendency and measures of dispersion complementary to each other while…

A: Mean is one of which given us central tendency of the data. The other two being median and mode. The…

Q: What percentage of the data in a sample falls below the third quartile Q3?

A: There are three quartiles Q1, Q2 ans Q3. 25% of observations lies between each two quartiles.

Q: What does level of significance indicates?

A:

Q: Explain the meaning of the specified term. Sample data

A: Population: A ‘population’ is defined as a set or collection of all the individual persons, objects,…

Q: Comment on one aspect of the comparison of data from the two datasets that can be seen more easily…

A: The sample of size 20 new balls and 20 current balls are taken in order to check that if there is a…

Q: Which of these gives the best measure of central tendency for the given data? A. Mean   B. Median…

A: Mean It is the average of given set of numbers. It is calculated by adding all the values and…

Q: Differentiate the three measures of central tendency: ungrouped data.

A: The three measures of central tendency are : 1) Mean 2) Median 3) Mode MEAN →The arithmetic mean is…

Q: What is the formula for the mean absolute deviation formula for paired data sets?

A:

Q: 1 a) Hair color is an True False example of a qualitative data.

A: The data of interest is hair color.

Q: Define the term Penal data?

A: Panel data is useful in mainly econometrics and statistics. It is also called as longitudinal data.…

Q: What are the findings of the study?

A:

Q: What is one of the distinctions between a population parameter and a sample statistic?

A: The population parameter is the measure based on whole population. And the statistic is a measure…

Q: It states that there is significant difference between the observed and expected data.

A: Alternative Hypothesis

Q: What is the mean difference between the samples?

A: Test is that whether the mean number of mass transit trips is equal for both neighborhoods. Note :…