In a grouped data, the difference between the last upper bound and first lower bound is called

The difference between upper and lower boundaries of class is called______

The difference between the upper and lower frequency limits of the signal is called the.....

The tissue present between the upper and lower epidermis is called .........

Consider the data The difference between the upper limit of the median class and the lower limit of the modal class is

Given data: The difference between the upper limit of the median class and the lower limit of the modal class is -