Is the dependent variable is always dependent to the independent variable(s) of the study? Why?

Q: Explain the difference between the one-way fixed effects model and the one-way random effects model.

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Q: What are the explanatory variable and response variable for this relationship?

A: Given that among a group of 138 customers aged 14-23 who send more text messages tend to use a…

Q: How can we know if the inclusion of some independent variables contributes to the explanation of the…

A: Regression Analysis is the mathematical linear relationship between dependent variables and one or…

Q: Test at a 5% level of significance if age and traffic violations are independent of each other.

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Q: What is the independent variable and dependent variable in this question

A: There are two variables Level of parenting stress Number of children (one child and two or more…

Q: What is the correct definition of interaction? O Interaction is the difference in p-value for two…

A: The interaction means the, Suppose we consider interaction between two variables.  Then interaction…

Q: A researcher is evaluating the effectiveness of meditation for reducing stress by measuring stress…

A: Solution The researcher wants to test the effectiveness of meditation for reducing stress by…

Q: A lecturer would like to analyse whether there is a relationship between the country of origin of…

A: First Variable is Country of origin of international students and second variable is Number of hours…

Q: A researcher would like to evaluate the claim that drinking large quantities of water can help…

A: Correlational study:  A correlational study is an one type of study where researcher observes the…

Q: A fairly high correlation should exist between the two variables?

A: Consider that X and Y are two random variables. While Corr (x, y) is defined as the correlation…

Q: The height and arm span of a sample of 50 teenagers Identify the explanatory variable and the…

A: Here we have to identify the explanatory variable and response variable

Q: In MANOVA, main effects and interaction are assessed on multiple dependent variables (DVs). True or…

A: MANOVA: MANOVA (one-way multivariate analysis of variance) is used to determine the significant…

Q: If the regression line is not a "good fit" what would be better to use to approximate a response…

A: The response variable is called dependent variable. If the regression line is not a good fit, then…

Q: What does it mean to say that two variables are positively​ associated? Negatively​ associated?

A: Association: The association of how two varaibles are connected with each other. It decides how one…

Q: A researcher wants to find if there are associations between heart diseases and several variables.…

A: Association between the variables can be established if both the variables are categorical.…

Q: The primary aim of a study by Carter et al. was to investigate the effect of the age at onset of…

A: Probability of an event =Favourable OutcomesTotal Number of OutcomesP(A∩E)=Person will be Early and…

Q: Suppose we want to use systolic blood pressure to predict diastolic blood pressure. The explanatory…

A: Solution

Q: A researcher is interested in examining how exposure to natural light influences mood. She randomly…

A: Introduction: It is of interest to compare the effect of three different levels of exposure to…

Q: Researcher asked waitresses to wear different colored T-shirts on different days for a six-week…

A: Independent variables- Independent variable is the variable the experimenter changes or controls to…

Q: How might the absence of data screening affect a researcher’s data quality, their interpretations of…

A: We have to understand the role of data screening when it comes to doing research. During data…

Q: When participants with high self-concept scores have relatively low depression sores, what type of…

A: Correlation Analysis contributes to the understanding of economic behaviour, aids in locating the…

Q: In a typical experiment the researcher manipulates the independent or explanatory variable and then…

A: Example 1 ) We want to assess whether a new learning method is helping the Male and Female students…

Q: In a study reported in the American Journal of Clinical Nutrition, young men who drank fat-free milk…

A: Given, In a study reported in the American Journal of Clinical Nutrition, young men who drank…

Q: What variable of this study could have been controlled?

A: Controlling for a variable means measuring extraneous variables and removing them as they do not…

Q: Do you think the regression in Table 5 suffers from omitted variable bias? If yes, which additional…

A: Regression is used to predict the value of dependent variable based on one or more independent…

Q: An experiment is conducted to examine the effects of ingesting hot dogs, pizza, ice cream, sour…

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Q: Suppose the correlation coefficient is 0.9. The percentage of variation in the response variable…

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Q: 1. What is the best testing method to be used when determining the significant difference of the…

A: Hypothesis testing is a procedure of testing a claim that is being made about the population…

Q: If two distinct values of the variate are given when is the covariance or coefficient of correlation…

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Q: Joe wanted to conduct an experiment where participants were randomly assigned to receive either no…

A: GivenDependent variable = heart rate in beats per minutethe independent variables is amount of…

Q: What is the explanatory variable ?

A: What is the explanatory variable ?

Q: In a typical experiment, the researcher manipulates the independent or explanatory variable and then…

A: Given that - In a typical experiment, the researcher manipulates the independent or explanatory…

Q: I cannot find the test statistic for the image of the problem

A: For sample 1 (With almonds): xi xi-x (xi-x)2 3 1.142857 1.306122122 1 -0.85714 0.734694122…

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: Does a causal relationship exist between two variables when a very strong positive correlation…

A: Correlation between the variables:Correlation:Correlation analysis is used to measure the strength…

Q: What is negatively correlated?

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Q: How to decide whether any potential influential observation that you detected is in fact an…

A: Given information: The investigator is specially interested to know, how an influential observation…

Q: A group of disabled women ages 65 and older were followed for several years. It was found that those…

A: In the following question it being observed that is there a cause and affect relationship between…

Q: I want a dataset for my statistics research project. in which i can find at least 3 Quantitative…

A: It is  advertise data set  TV, Radio and Newspaper are independent variable and sale is dependent…

Q: If a predictor variable is well correlated with the other predictors, then standard error of its…

A: We have given the statement, If a predictor variable is well correlated with the other predictors,…

Q: 112.51 106.2 102 103.74 103.17 112.65 106.2 83.57 95.05 112.65 103.74 103.74 112.67 106.2 103.74…

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Q: It is desired to investigate whether there is a relationship between the two variables. In which…

A: Introduction: Chi-square analysis and correlation analysis are both useful tools in exploring the…

Q: The multivariate analysis considers more than one factor of independent variables that influence the…

A: Regression model is used to predict or forecast future value keeping certain factors constant.  An…

Q: A researcher wants to know if there is an association between feelings of hunger and aggressive…

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Q: What is the “third factor” problem concerning correlational studies as it relates to inferring…

A: The correlation between any two variables is the linear relationship between those variables, but it…

Q: Devise two scenarios where a dependent/matched/paired t-test would be appropriate.  Be sure to…

A: The dependent /matched/paired t-test is used when we have to compare the means for the same group at…

Q: What are the explanatory and response variables?

A: Response variable is defined as the variable which depends on other variable i.e changes on changing…

Q: The difference between an observed value and a predicted value of the response variable is called a…

A: Residual: The difference between the observed value of the response variable and actual value of the…