# Can A Lower Limit Be Negative

Can A Lower Limit Be Negative. When solving the left side limit we can do: 7 when the lower control limits for ap chart are less than zero what is done?;

Why can the lower control limit not be a negative number? If the data are all positive, then the whisker itself must be positive (since whiskers are only at data values), but the inner fences can extend beyond the data. It's an easy matter to construct examples where this is the case;

### 4 Why Have A Lower Control Limit?;

6 what is lower control limit?; Since the upper control limit cannot be a negative number. You can use some modified ci's to ensure that the lower confidence bound is positive.

### Since The Percent Of Defective Records Is Always A Positive Number.

As we sometimes know when we calculate natural process limits, the lower limit is negative. Yes, the lower limit may be negative. If the data are all positive, then the whisker itself must be positive (since whiskers are only at data values), but the inner fences can extend beyond the data.

### Obviously, No Point Is Going To Fall Below Zero, And Hence The Lcl Is Of Little Significance Here, Except When The Count Is Zero.

Some times when the limits are worked out, the lower control limit might assume a negative value; How can an absolute value in a limit be negative? 1 why can the lower control limit not be a negative number??;

### Since The Upper Control Limit Is Positive.

Can a box plot have a negative value for one of the fences? But the computer does not know when we do and don't and calculating that inference is quick the computer will present it. 5 can we have negative limit?;

### In Such Cases, The Calculated Lcl, Being Negative Has No Meaning And The Lcl Is Taken As Zero.

So we did the bottom limit = 0. 3 can the lcl be a negative number?; 7 when the lower control limits for ap chart are less than zero what is done?;