Imagine a study comparing two groups:  undergrad vs. graduate students in terms of stress level.  To answer the research question as to who had greater stress, undergrad or graduate students, what kind of statistics would you use?

Q: What descriptive statistics would you use for a survey about depression?

A: Descriptive statistics: A descriptive statistic is a summary statistic that quantitatively describes…

Q: Is the sample median always equal to one of the values in the sample? If so, explain why. If not,…

A: Median: The median defines that the middle number of the data. The median is calculated as follows:…

Q: A 2010 Pew Research poll asked 1,306 Americans "From what you've read and heard, is there solid…

A: Given: A 2010 Pew Research poll asked 1,306 Americans "From what you've read and heard, is there…

Q: What is the test Statistics? Of the problem in the picture

A: Given: p0=23=0.67x=25n=40p^=2540=0.625α=0.01

Q: Could two samples have the same range but different means? Explain.

A: Yes, Two samples have the same range but different means.

Q: Explain Sources of Existing Statistics?

A: Existing statistics are previously collected data that has been analyzed in at least one way. There…

Q: composed of international students. Which one of the following numbers is a statistic?

A: A parameter is a measure which us based on whole population. A statistic is a measure which is based…

Q: How much difference is there between the mean for the treated sample and the mean for the original…

A: Definition Sample Mean x It is the mean of all the values of a sample.   Population μ It is the mean…

Q: If there are 36 data points in a set of data, what is the number of degree of freedom?

A: The basic definition of degree of freedom says that how many observation is free that is for how…

Q: The two main branches of statistics are Descriptive and Inferential Population and a sample…

A: The branch of statistics in which a random sample of data take from population is used to describe…

Q: What is the test statistics? From the problem in the picture

A: Given - n1=20, x1=8.2, s1=5.9n2=30, x2=5.6, s2=5.7

Q: What does Common outcomes signify in statistics.

A: In statistics, outcomes are defined as the result of an event. An outcome of an event can be unique…

Q: how does the sample and population relate?

A: Sample and population both are different items, but both are related with each other. Population is…

Q: What is descriptive statistics? What information does it provide? Why is it important?

A: Descriptive statistics: Descriptive statistics is a branch of statistics that deals with the…

Q: Is the sample mean always equal to one of the values in the sample? If so, explain why. If not, give…

A: FALSE Lets take sample set S={10,15,20,25,30,35} The mean of above sample S is =…

Q: What test statistics will be used for this problem?

A: Test is that whether there is a color preference in shirts.

Q: For a particular population, is the population mean a variable? What about a sample mean?

A: Explanation:Since the population mean is constant, it cannot be variable. Population mean is a…

Q: What is the goal of statistics?

A: The main purpose of statistics is to understand the data deeply.

Q: Before beginning a new and costly advertising campaign, Starbucks would like to know how best to…

A: Given information: Given data represents the observed counts of two categories gender and coffee…

Q: Distinguish briefly the Population and sample

A: Population : The population is a wider group of people, items, events, etc on the basis of which…

Q: Consider the following scenario: you want to investigate the relationship between the number of…

A: Here we want to see if there is a relationship between 'likes' on Facebook and 'number of friends'…

Q: Does the situation describe a parameter or a​ statistic?   The percentage of families and…

A: We have to find the situation.of given data

Q: how many sports played male vs female based on the data

A: Given, The number of sports played by the students: Grade Number of students 9 16 10 13 11…

Q: The ages of a group of friends are listed: 40, 26, 59, 36, 21, 42, 41, 42. Using the given sample…

A: From the provided information, The data values are as follow: 40, 26, 59, 36, 21, 42, 41, 42 Sample…

Q: Explain HOUSING STATISTICS?

A: Housing statistics is the branch of social statistics that studies housing and the housing condition…

Q: What is the difference between Sample and Population? Provide an example of each.

A: Population -whole number of individuals Sample - a part of population taken randomly

Q: describe why it is important for the sample in your study to be as representative as the source

A: Representative samples are important as they ensure that all relevant types of people are included…

Q: How is the goal of descriptive statistics served by computing a measure of central tendency?

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

Q: why is it  important for students to know something about statistics as applied to psychology?

A: Yes it is important for students to know something about statistics as applied to psychology…

Q: If there are 13 data points in a set of data, what is the number of degrees of freedom?

A: Sample size n=13

Q: In psychology, what are two factors that decrease statistical power?

A: Factors that affect power are There are 3 factors that affect power are :-• Sample size (n) : -…

Q: doesn't the mean of a sample population equal the true proportion?

A: Yes, the sample population is equal to true proportion.

Q: What is the meaning of this statistics comic?

A: Extrapolation, Randomisation, and Type II error

Q: What is the upper quartile of the following data: 4, 1, 4, 3, 6

A: Given that data  4, 1, 4, 3, 6 Formula for upper quartile Q3. Q3=(3(n+1)/4)

Q: find an example of when statistics were misused/skewed and state the reason why you think the…

A: when statistics were misused/skewed: Misuse can also result from mistakes of analysis that result in…

Q: When we comparing the hospitals in our area for seeking a better care, what statistics or data we…

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

Q: What is Variability within Groups?

A: The term variability within groups is used in ANOVA technique, it is also known as error variance…

Q: make up 2 data sets, each with 5 values, that have the same mean and median, but different standard…

A: Let the two datasets be x and y

Q: what are the applications of statistics on an academic setup?

A: Statistics is the branch of applied Mathematics in which we do collection, interpretation, analysis…

Q: What is the relationship of population, sampling, sample, and inference in statistics?

A: Statistics is a field of study which involves collecting, arranging, analyzing, and drawing…

Q: Why is hair color classified as categorical data?

A: In categorical variable we simply assign labels for identification. Categorical values are discrete…

Q: Consider the data set {6,6, 9, 2, 5}. What is the population variance for this set? Round your…

A:

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

A: Test is that whether there is truly significant difference between the two data sets. The test…

Q: Given the data: 1, 1, 3, 7, 7, 16, 21, 27, 30, 31. What score denotes the lower quartile, middle…

A:

Q: What is the mean population?

A:

Q: from the letters of the word STATISTICS?

A: Given the letters of the word STATISTICS

Q: Why do we have a margin of error in statistics? If statistics are meant to be accurate, why are they…

A: We know that in statistics while carrying out an experiment we generally deal with a sample to get…

Q: What proportion of the statistics students in this class are sophomores? 19 0.202 0.302 0.105

A: