Derive the Best Linear Unbiased Estimator (BLUE) for ß. Denote this by BBLUE. Make sure to state why this is the BLUE.

Q: Describe about the three positive relationships of Scatterplots?

A: Here's the explanation is as follows; A scatter plot is a type of graph that shows pairs of data…

Q: very observation in a data set is multiplied by a constant k. What best describes the effect on…

A: Given : Every observation in a data set is multiplied by a constant k Let the observations be :…

Q: A study took a sample to investigate how video on demand and other subscription-based services…

A: The set or collection of all possible observations is defined as the population. The proper subset…

Q: A botanist wants to know if two different soils lead to different levels of evaporation in plants.…

A: In this case, Each of the plants is used in both soils, she can use a paired samples t-test to…

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: What type of analysis and descriptive statistics should be conducted to best depict the relationship…

A: 1) The number of hours in the operating room is a continuous variable and the number of hours on a…

Q: Give definition of Cross-Sectional Data?

A: Cross-sectional data is a type of data that is gathered by analyzing the various subjects like…

Q: A graduate statistics class is unhappy with midterm grades. The professor will curve the grades only…

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: An insurance company wants to know if the average speed at which men drive cars is higher than that…

A: Confounding variable has a strong influence in causal relationship.

Q: Can the stem and leaf graph help to measure gender and age for MI patients?

A: Numerical data is displayed and organised using a type of data visualisation technique called a…

Q: The rows of data set represent observations true of false

A: We know that, if there is a dataset then A row represents the observation whereas The column…

Q: When describing a data set, the mean is used with and the median is sed with Z-scores are used to…

A: When describing a data set, the mean is used with average and the median is used with middle value.

Q: Define the term Independent Variable?

A: Define the term independent variable.

Q: why do you think the data presented this way?

A: The 2 different factors considered are: Human Factors Land Use Ozone Aerosols Greenhouse…

Q: Define the Test a slope for significance?

A:

Q: What does it mean when a constant is added to every data value in a data set ?

A: when a constant is added to every data value in a data set, there will be a change in the…

Q: A study was undertaken to see how accurate food labeling for calories on food that is considered…

A: Given:

Q: A study was undertaken to see how accurate food labeling for calories on food that is considered…

A: In statistical hypothesis testing, the one-way ANOVA (analysis of variance) test is a commonly used…

Q: A linear model was fit to predict weekly Sales of frozen pizza (in pounds) from the average Price…

A: In this case, a linear model was fit to predict the weekly sales of frozen pizza from the average…

Q: I finished first in the high jump and third in the pole vault. determine whether the data described…

A: Nominal Data- Take more than 2 values but these values are not ordered –there is no natural ordering…

Q: Correlation does not imply causation. What does this mean? Find an example in the media that needs…

A: Correlation measures the amount of linear relationship between two variables. The relationship may…

Q: State the empirical rule for variables.

A: The empirical rules for variables are as follows:68% of all possible observations lie within one…

Q: Which are the graphs for quantitative data?

A: Graphs such as pie charts and bar graphs show descriptive data, or qualitative data. The top 2…

Q: The full question for the last question is written down below  Fail/fail to reject H0. There is…

A: The mean difference between the mean of two sample using the t test for sample size. If the sample…

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.