control chart
nounUK /kənˈtrəʊl tʃɑːt/
US /kənˈtroʊl tʃɑːrt/
A control chart is a picture with lines that shows if a job is going well or if something is wrong.
The teacher used a control chart to see if the class was getting better at reading each week.
RELATED WORDS
OTHER MEANINGS
2. A statistical tool used in manufacturing to track whether a process stays within set limits.
Engineers checked the control chart to confirm the machine was not making parts too wide.
3. A visual display that helps spot unusual changes over time.
The nurse looked at the control chart to see if patients' temperatures were staying normal.
4. A chart used in schools to track student progress and behavior.
The control chart on the wall showed how many books each student had read.