Every MBA, CPA, and CFA student will learn statistics in their program in their first or second semesters. Understanding statistics is vital for business students because it makes you a better decision-maker whether you are an investor, owner, operator, or executive. Many statistics classes use the textbook ‘Statistics for Business: Decision Making and Analysis’ by […] Read more
Statistics Tutors
Are you looking for a statistics tutor? Graduate Tutor’s Statistics Tutors are just what you need.
Tutoring for B6101 Business Analytics at Columbia Business School
If you don’t find the assistance you are looking for our statistics tutors provide tutoring for B6101 Business Analytics course at Columbia Business School or other operations courses. Email or call us, and we will happily set up a tutoring session.
MBA Tutoring for B5100 & B6100 Managerial Statistics at Columbia Business School
Our Statistics Tutors tutor both B5100 & B6100 Managerial Statistics courses at Columbia Business School. B5100 & B6100 Managerial Statistics are mandatory statistics and data analysis courses for all MBA & EMBA students at Columbia Business School. The course introduces students to probability and statistics involved in managerial decision-making.
MBA Tutoring for Digital Marketing B8679 at Columbia Business School
Students of Digital Marketing B8679 will work on a marketing project that involves an in-depth study of display advertising, search advertising, and social media marketing in a real-world company. This study is done at the tactical and strategic levels.
Estimating the Sample Size Required for a Target Margin of Error (MoE)
How large a sample do we need to achieve a target Margin of Error? The margin of error depends on 1) the standard deviation; 2) the sample size; and 3) the confidence level we seek.
When should I use the t-test vs. z-test (t distribution vs. z distribution)?
Which test should I use? Should I use the z-test or the t-test? Which distribution can I use: the z distribution or the t distribution? Can I use the t-test or the z test if the sample size is smaller than 30? Is it mandatory to use the z test if the sample size is more than 30 and is considered a large sample?
When to use Norm.Dist vs. Norm.Inv?
Norm.Dist is used when you want to find the probability of finding a value less than or equal to X. The inverse of the Norm.Dist is also useful. 1 – Norm.Dist is used when you want to find the probability of finding a MORE than or equal to X.
How to Test for the Underlying Assumptions of Linear Regression?
Regression analysis is a versatile and powerful tool. However, it is also misused and abused due to insufficient understanding of the regression theory. One source of error is the unawareness of the assumptions underlying regression models. Regression analysis is built on four assumptions. Ideally, these assumptions must be true to use the regression model to […] Read more
Tutoring for Auto-Regressive Integrated Moving Average (ARIMA) Forecasting
We provide tutoring for a variety of time series forecasting techniques. We discuss what we like to focus on when we tutor ARIMA forecasting or Auto-Regressive Integrated Moving Average Forecasting on this page. What is ARIMA? ARIMA is a forecasting technique first proposed by George Box and Gwilym Jenkins in 1970. ARIMA forecasting models are […] Read more