a least squares regression line

The vertices of two angles of a triangle are (3, 1) and (0, -4). The y -axis is a line of symmetry of the triangle. What is the area of the triangle? => 15 square units or 21 square units or 5 square units or None of the above..

For 10 observations on price(in 1,000$) and supply(tonnes) of an item, the following data were obtained. Determine the equation of the regression line for the data and predict the value for y ′ when x = 16. ∑ x = 130, ∑ y = 220, ∑ x 2 = 2288, ∑ ..

Estimation (point estimators and confidence intervals): Estimating population parameters and margins of error Properties of point estimators, including unbiasedness and variability Logic of confidence intervals, meaning of confidence level and confidence intervals, and properties of conf..

Comparing center and spread: within group, between group variation Comparing clusters and gaps Comparing outliners and other unusual features Comparing shapes Exploring bivariate data: Analyzing patterns in scatterplots Correlation and linearity Least-squares regres..

Probability problems with finite sample spaces Conditional probability Discrete/continuous random variables Mean, variance of discrete random variable Standard distributions Mean, standard deviation of normally distributed random variable Central limit theorem Line of best fit - ..

Question: Give the definition of the following terms. Are there other terms that need to be defined first i) line segment ii) radius of a circle iii) square Answer: Line segment: A line segment is a part of a line with two terminal poin..

Introduction - We are familiar with plane figures bounded by straight line segments as sides. They are known as Polygons . Polygon is a word of Greek origin. It means figure with many angles implying many sides. Squares, rectangles and other four-sided geometric figures formed b..

Question: Draw a pair of axes, (a) Plot the points (4, 1), (1, 3) and (-1, 0). (b) A fourth point is added to make a square. What are its coordinates? Answer: (a) Let the plotted points be A (4, 1), B (1, 3) and C (-1, 0). (b) Complete the square ABCD by drawing pa..

Electric charge is a basic property of all matter. Unlike charges attract, like charges repel. Conductor allow flow of electric charges through them while insulators don't. Electric charges have three basic properties (a) Additivity (b) Quantisation (c) Conservation Coulomb's law: the ..

Summary - Electric charge is a basic property of all matter. Unlike charges attract, like charges repel. Conductor allow flow of electric charges through them while insulators don't. Electric charges have three basic properties (a) Additivity (b) Quantisation (c) Conservation Coulomb's law: the Ele..