# What does a negative schedule variance mean?

## What does a negative schedule variance mean?

In other words, it is the dollar value of the difference between the work scheduled for completion in a specified period and the work actually completed. A negative schedule variance means that a project is behind schedule, while a negative variance means that it is ahead of schedule.

loss of revenue

## Is a negative variance always adverse?

Variance analysis attempts to identify and explain the reasons for the difference between a budgeted amount and an actual amount. Variances can be adverse/unfavourable or favourable ie they can be positive or negative. A positive or a negative variance may be favourable or it may be adverse/unfavourable.

## Which variance is always adverse?

Idle time variance

## What is better a positive or negative variance?

In theory, the positive variances are good news because they mean spending less than budgeted. The negative variance means spending more than the budget.

## What does a negative sigma mean?

A negative sigma value means that most of the process is performing outside your customer’s specification range (LSL and USL).

## Can covariance be negative?

Covariance measures the directional relationship between the returns on two assets. A positive covariance means that asset returns move together while a negative covariance means they move inversely.

## Can you have a negative z score?

1 Answer. Yes, a z-score with a negative value indicates it is below the mean. Z-scores can be negative, but areas or probabilities cannot be.

## How do you solve a negative z score?

1:29Suggested clip 61 secondsNegative Z-Score – Intro to Descriptive Statistics – YouTubeYouTubeStart of suggested clipEnd of suggested clip

## What is the maximum Z score?

The standard normal distribution can range from −∞ to ∞ , but extreme values are highly unlikely. According to the empirical rule, about 68% of all z-scores will be between -1 and 1 (standard deviations from mean), 95% will be between -2 and 2, and 99.7% will be between -3 and 3.