Відео

Prove that if scores are weighted equally and if the weights add to one, then the weighted mean is the same as the mean.

Prove that for all data sets, the sum of the deviations from the mean is zero. You can use that as a check when computing the variance.

Using graphing software to graph a straight line.

Deciding which of two linear equations is the better fit by computing the sum of squared prediction errors or residuals (SSE)

Determining whether an equation in variables x and y is linear with or without drawing a graph.

Use the method of completing the square to determine the vertex and a second point on a parabola. Then use a graphing utility to sketch the graph of a parabola by first indicating whether the parabola opens horizontally or vertically, then plotting the vertex, and finally plotting a second point.

Using a graphing utility to sketch a parabola

Compute sample mean, median, mode, midrange, and proportion

Compute mean, median, mode, midrange, and proportion

Graphing a rational function from its equation. This function has a vertical asymptote, a horizontal asymptote, and 2 holes. The shape is a hyperbola with 2 holes.

Graphing an ellipse centered at (0,0) by putting the equation in standard form in order to identify the center, vertices, and co-vertices.

Compute a 95% confidence interval for a proportion using normal approximation.

Welcome to Math 150: Introductory Data Analysis

Computing measures of proportion in fraction, decimal, and percent format. Computing measures of center including mean, median, mode, and midrange. A discussion of outliers.

Math 251 welcome

Math 161 Introduction

161 Is it linear?

251 Central Limit Theorem

251 Normal Random Variable

251 Poisson Random Variable

251 Random Variables

251 Confidence Interval for a Proportion

251 Testing Goodness of Fit

251 Hypotheses for Independent Means

251 Hypotheses for Independent Proportions

251 Paired Data

251 z-confidence interval for mean

251 Categorical Graphs

251 Misleading Graphs