For the following variable, state whether it is qualitative or quantitative and determine the level of measurement (nominal, ordinal, interval or ratio)

The severity of side effects experienced by patients while being treated with a particular medicine is under study. The severity is measured as: none, mild, moderate, severe or very severe

For the following variable, state whether it is qualitative or quantitative and determine the level of measurement (nominal, ordinal, interval or ratio)

The number of patients in a waiting room at a clinic

For the following variable, state whether it is qualitative or quantitative and determine the level of measurement (nominal, ordinal, interval or ratio)

The time required for a wound to heal when a new medicine is being used