a) A researcher used the sample median as a measure of center instead of the sample mean. What do you think could have informed his decision and why? b) An investigator decided to conduct a research to describe the average number of females in each family. Considering the case of families in the town. Describe what may contribute to the difference between the value of the sample statistics and its corresponding population parameter.  c) How would the investigator control

Q: Use the technology of your choice to obtain the measures of center that are appropriate from among…

A:

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 population mean and sample mean? In what cases do the population mean…

A: Understanding the concept of population and sample mean is critical to statistical inferential…

Q: State two advantages of using a sample statistic rather than a parameter.

A: The numerical value that describes the characteristics of a population as a whole is defined as the…

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: 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: What caution is must for finding the median for ordered qualitative data?

A:

Q: Explain in your own words what it means that a sample must be representative of the population.…

A: To explain about sample and population and to choose the best fit for the study on students of the…

Q: What is meant by tied observations?

A: The objective is to define "Tied observations". And an example is considered for defining the rank…

Q: Write a simple research question that can be answered with an independent samples

A: The Independent samples t-test compares the means of two independent groups in order to determine…

Q: Explain the Formulas for a sample comparable to the ones for a population?

A: If the data includes all the possible values, then it is called population. Whereas, the sample data…

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: 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 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: if the grades you receive are good bad and unacceptable , would this be a qualitative or a…

A: Qualitative measure is a type of information that describes traits or characteristics  And the…

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: Explain the importance of describing and comparing set of data in analyzing statistical…

A: Importance of comparing and describing a dataset.

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

A: Given information: Bias, error, and Precision

Q: 3. In Biology 340, weights are assigned to required activities as follows. Activity Project Exam 1…

A: Comment: As per the our company guidelines we are supposed to answer only one question. Kindly…

Q: If you increase the sample size to 50 from 30, will the standard error of the mean be smaller or…

A: When increasing the sample size to 50 from 30, the standard error of the mean would be smaller…

Q: An instructor plots the grade distribution for a practice final exam and determines that the grades…

A: For a negatively skewed graph mean<median<mode.

Q: Descriptive statistics is another way of drawing a conclusion which helps us determine whether the…

A: Descriptive statistics: Descriptive statistics is a part of statistics where the data is summarize…

Q: Explain about the Two Independent Samples.

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

Q: Background The Food and Drug Administration (FDA) tries to find out whether there is a relation…

A: The Food and Drug Administration (FDA) tries to find out whether there is a relation between the…

Q: Sketch a histogram for whicha) the mean is greater than the median.b) the mean is less than the…

A:

Q: Explain the importance of describing and comparing set of data in analyzing statistical…

A: Importance of comparing and describing a dataset.

Q: does this mean that the answer saying "The sample statistic equation is correct to use when the data…

A: Yes you are correct. The sample is the the subset of the population.

Q: Make your own problem about single sample estimating mean. Include all of your solution.

A: Taking data Sr. No. Data (x) 1 2 2 5 3 6 4 4 5 8

Q: Pick a sample problem where despite correlation, causation cannot be reasonable argument.

A: Let us take an example of sales of umbrella and sales of raincoats. Sale of raincoats Sale of…

Q: Consider a data set with a very high sample variance measurement. What would you expect the impact…

A: Let a data set have a high sample variance. The histogram is used to visualize a grouped frequency…

Q: The National Sleep Foundation recommends that adults aged 18 to 64 get an average of 8 hours of…

A:

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2

Q: 3. Name and define the four types of measurement levels used in statistics.

A: Four Types Of Measurement Level. Nominal: the data can only be categorized Ordinal- the data can be…

Q: Provide an example of a study, including the variables, level of measurement, and hypotheses, for…

A: Inferential statistics is about testing a claim about a population using suitable test statistic.