A researcher was interested in determining if the attitude of statistics’ students changed from the beginning to the end of the course. She asked her students to fill out an “Attitudes Toward Statistics” scale at the beginning and end of the course.   State the alternative hypothesis. Is this directional or non-directional test? IV (levels, b/w or w/I)? DV (scale of msmt)? Type of test?

Q: A union of restaurant and foodservice workers would like to estimate this year's mean hourly wage u…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

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 the difference between a descriptive and inferential statistics? When should you use each…

A: Descriptive and inferential statistics are two types of statistical analyses that are commonly used…

Q: Why should I learn statistics?

A: Statistics helps us to describe and organize data. It also helps us to make inferences from data.

Q: Why we need different measures of central tendency and dispersion, if mean is given? Briefly explain…

A: The different measures of central tendency are as follows: 1. Mean: It is the most popularly used…

Q: Q1. What is descriptive statistics? How is it different from inferential statistics? Give an example…

A: Descriptive statistics: Descriptive statistics are brief descriptive coefficients that summarize a…

Q: Select the correct answer for following. Which type of the analysis surmises the input range in…

A:

Q: Can one "trust"

A: Statistics is the study of collecting , analyzing and interpretation of the data.

Q: I'm conduting a research study based around the question, does society influence women's self image?…

A: A study around the question, does society influence women's self-image? is being conducted.

Q: Which is the null hypothesis? * There is a significant relationship between a person's age and their…

A: We have given that the data of two populations one of person’s age and other one is time spent for…

Q: Maria and Clara did questionnaires for samples of undergraduate students. Amongst other things, the…

A: Given: The results from questionnaire are given. The higher scores show greater approval of…

Q: How statistical tests are used?

A:

Q: What is Percentile Rank of an Observation?

A: Percentiles: If the elements in the data set are arranged in ascending order of magnitude, then the…

Q: What are the four levels of measurement scales for variables in statistics?

A: Introduction The measurement scale of a variable in statistics is an important factor that…

Q: What is the difference between correlation and causation?

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

Q: Would a sophomore year statistics class students’ average age be a good Point Estimator(This is a…

A: Yes, as usually students in sophomore year are of certain age and the age range is not so huge,…

Q: What statistical tool should be used for the problem?  An insurance company wants to determine the…

A: We need to identify suitable statistical tool

Q: Researchers conducted a study to understand the effect of gender on statistics anxiety. They believe…

A: Given, we have two samples males and females.

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: Explain the difference between “bias”, “error”, and “precision”. Be sure your definition explains…

A: Given information: Bias, error, and Precision

Q: Are the statistical techniques used in the analysis of data appropriate to the levels of measurement…

A: Statistics               Statistics is widely used to gathering the different datasets,…

Q: In your opinion, what are the advantages and disadvantages to using self-reports for gathering data…

A: Advantages of using self-reports for gathering data on physical activities: Self-reports are…

Q: the p-value and correlation are one of the most commonly used statistical tests for determining the…

A: The purpose of plotting scientific data is to visualize variation or show relationships between…

Q: Can you find me an example of a grouped histogram on the internet, where the independent variable is…

A: As per our Q&A guidelines, we can answer any 3 subparts. For the remaining sub questions to be…

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: Explain the relationship between the population mean ?, sample mean ?̅, and a value of the sample…

A:

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: What is the difference between correlation and causation in statistics and why is it important to…

A: Introduction Correlation and causation are two important concepts in statistics that are often…

Q: What is the role and importance of statistical thinking?

A: Introduction Statistics is a discipline which involves collection, arrangement and analysis of data…

Q: What is Inferential Statistics in Quantitative research?

A: Statistics consists two parts:  1. Descriptive statistics: This part  of the include description…