Joshua Argo

University of Alabama at Birmingham
Teacher

Biography

I have been teaching for 13 years in Alabama, splitting my time between Pinson Valley High School and currently at Leeds High School. Over the past 3 years I have been teaching AP Statistics, which has become my area of expertise and something I really enjoy teaching.

Education

MA Mathematics Education
University of Alabama at Birmingham
BS Mathematics
University of Alabama at Birmingham

Educator Statistics

Numerade tutor for 5 years
2796 Students Helped

Topics Covered

Unlock Insights with Data-Driven Graphs & Statistics
Mastering Equations and Inequalities: Your Guide to Mathematical Success
Functions
Maximizing Accuracy with Effective Sampling and Data Analysis
Understanding the Normal Distribution: A Comprehensive Guide
Hypothesis Testing: Understanding the Basics for Accurate Results
Unlocking Insights with Descriptive Statistics: A Comprehensive Guide
Exploring Probability Topics: From Basics to Advanced Strategies
Understanding Discrete Random Variables: A Comprehensive Guide
Unlocking the Power of Confidence Intervals: A Comprehensive Guide
Hypothesis Testing with One Sample: A Comprehensive Guide
Linear Regression & Correlation: Analyzing Data Relationships
Understanding Continuous Random Variables: Key Concepts
The Central Limit Theorem: Understanding Statistical Sampling
Unlocking Insights with Data Description: The Key to Effective Analysis

Joshua's Textbook Answer Videos

0:00
Probability with Applications in Engineering, Science, and Technology

Airlines sometimes overbook flights. Suppose that for a plane with 50 seats, 55 passengers have tickets. Define the random variable $Y$ as the number of ticketed passengers who actually show up for the flight. The probability mass function of $Y$ appears in the accompanying table.
(a) What is the probability that the flight will accommodate all ticketed passengers who show up?
(b) What is the probability that not all ticketed passengers who show up can be accommodated?
(c) If you are the first person on the standby list (which means you will be the first one to get on the plane if there are any seats available after all ticketed passengers have been accommodated), what is the probability that you will be able to take the flight? What is this probability if you are the third person on the standby list?

Chapter 2: Discrete Random Variables and Probability Distributions
Section 2: Probability Distributions for Discrete Random Variables
Joshua Argo
0:00
The Practice of Statistics for AP

Here is a stemplot of the percents of residents aged 65 and older in the 50 states:
(a) Find and interpret the percentile for Colorado, which has 10.1$\%$ of its residents aged 65 or older.
(b) Find and interpret the percentie for Rhode Island, with 13.9$\%$ of residents aged 65 or older.
(c) Which of these two states is more unusual? Explain.

Chapter 2: Modeling Distributions of Data
Section 1: Describing Location in a Distribution
Joshua Argo
0:00
The Practice of Statistics for AP

Do heavier people burn more energy? Metabolic rate, the rate at which the body consumes energy, is
important in studies of weight gain, dieting, and exercise. We have data on the lean body mass and resting metabolic rate for 12 women who are subjects in a study of dieting. Lean body mass, given in kilograms, is a person's weight leaving out all fat. Metabolic rate is measured in calories burned pody mass is an important searchers believe that lean body mass is an important influence on metabolic rate. (a) Make a scatterplot on your calculator to examine the researchers' belief.
(b) Describe the direction, form, and strength of the relationship.

Chapter 3: Describing Relationships
Section 1: Scatterplots and Correlation
Joshua Argo
04:52
The Practice of Statistics for AP

The figure below is a cumulative relative frequency graph of the amount spent by 50 consecutive grocery shoppers at a store.
(a) Estimate the interquartile range of this distribution. Show your method.
(b) What is the percentile for the shopper who spent $19.50?
(c) Challenge: Draw the histogram that corresponds to this graph.

Chapter 2: Modeling Distributions of Data
Section 1: Describing Location in a Distribution
Joshua Argo
0:00
The Practice of Statistics for AP

Exercises 15 and 16 refer to the dotplot and summary statistics of salaries for players on the World Champion 2008 Philadelphia Phillies baseball team.

Baseball salaries Brad Lidge played a crucial role as the Phillies’ “closer,” pitching the end of many games throughout the season. Lidge’s salary for the 2008 season was $6,350,000.
(a) Find the percentile corresponding to Lidge’s salary. Explain what this value means.
(b) Find the z-score corresponding to Lidge’s salary. Explain what this value means.

Chapter 2: Modeling Distributions of Data
Section 1: Describing Location in a Distribution
Joshua Argo
0:00
The Practice of Statistics for AP

Exercises 15 and 16 refer to the dotplot and summary statistics of salaries for players on the World Champion 2008 Philadelphia Phillies baseball team.

Baseball salaries Did Ryan Madson, who was paid $1,400,000, have a high salary or a low salary compared with the rest of the team? Justify your answer by calculating and interpreting Madson’s percentile
and z-score.

Chapter 2: Modeling Distributions of Data
Section 1: Describing Location in a Distribution
Joshua Argo
1 2 3 4 5 ... 29

Joshua's Quick Ask Videos

02:46
Intro Stats / AP Statistics

snickers® are fun! Here are the weights (in grams) of
17 Snickers Fun Size bars from a single bag:

(a) Make a stemplot of these data.
(b) What interesting feature does the graph reveal?
(c) The advertised weight of a Snickers Fun Size bar is 17
grams. What proportion of candy bars in this sample
weigh less than advertised?

Joshua Argo
05:20
Intro Stats / AP Statistics

A garment manufacturer was interested in predicting the annual maintenance cost of sewing machines based on the age of the machine. A sample of 10 machines revealed the following ages and maintenance costs during the previous year.
Machine A B C D E F G H I J
Age (Years) 9 4 2 8 4 5 1 3 6 8
Cost ($) 40 12 8 27 15 17 5 10 25 31
(i) Calculate the coefficient of correlation from the given data.
(ii) Determine the regression equation
(iii) Predict the maintenance cost of a machine that is 10 years old.

Joshua Argo
03:14
Intro Stats / AP Statistics

Here is a stemplot of the percents of residents aged 65 and older in the 50 states:
(a) Find and interpret the percentile for Colorado, which has 10.1$\%$ of its residents aged 65 or older.
(b) Find and interpret the percentie for Rhode Island, with 13.9$\%$ of residents aged 65 or older.
(c) Which of these two states is more unusual? Explain.

Joshua Argo
02:57
Intro Stats / AP Statistics

Exercises 27 to 30 involve a special type of density curve-one that takes constant height (looks like a horizontal line) over some interval of values. This density curve describes a variable whose values are distributed evenly (uniformly) over some interval of values. We say that such a variable has a uniform distribution.

Accidents on a level, 3-mile bike path occur uniformly along the length of the path. The figure below displays the density curve that describes the uniform distribution of accidents.
(a) Explain why this curve satisfies the two requirements for a density curve.
(b) The proportion of accidents that occur in the first mile of the path is the area under the density curve between 0 miles and 1 mile. What is this area?
(c) Sue’s property adjoins the bike path between the 0.8 mile mark and the 1.1 mile mark. What propor tion of accidents happen in front of Sue’s property? Explain.

Joshua Argo
04:32
Intro Stats / AP Statistics

Airlines sometimes overbook flights. Suppose that for a plane with 50 seats, 55 passengers have tickets. Define the random variable $Y$ as the number of ticketed passengers who actually show up for the flight. The probability mass function of $Y$ appears in the accompanying table.
(a) What is the probability that the flight will accommodate all ticketed passengers who show up?
(b) What is the probability that not all ticketed passengers who show up can be accommodated?
(c) If you are the first person on the standby list (which means you will be the first one to get on the plane if there are any seats available after all ticketed passengers have been accommodated), what is the probability that you will be able to take the flight? What is this probability if you are the third person on the standby list?

Joshua Argo
03:43
Intro Stats / AP Statistics

Two measures of center are marked on the density curve shown.
(a) The median is at the yellow line and the mean is at the red line.
(b) The median is at the red line and the mean is at the yellow line.
(c) The mode is at the red line and the median is at the yellow line.
(d) The mode is at the yellow line and the median is at the red line.
(e) The mode is at the red line and the mean is at the yellow line.

Joshua Argo
1 2 3 4 5 ... 396