Answer:
R - chart
Step-by-step explanation:
Range chart (R chart) is a control chart used for processes with two or more subgroups to determine if a process is stable or not. It monitors the mean and range of a normally distributed variable simultaneously collected at regular intervals during a given time. It is used when measuring small subgroups between two and ten at regular intervals from a process. Iy is a;so used for constant subgroups.
Answer:
It will take very less time actually. we cannot say accurately because if two girls start to chat they will till next day
It whould be 8 because if you divide it
Answer:
B
Step-by-step explanation:
