1 A ratio variable, has all the properties of an interval variable, and also has a clear definition of 0.0. 2  When the variable equals 0.0, there is none of that variable. 3  Variables like height, weight, enzyme activity are ratio variables.4  Temperature, expressed in F or C, is not a ratio variable. A ordinal variable, is one where the order matters but not the difference between values. 2  For example, you might ask patients to express the amount of pain they are feeling on a scale of 1 to 10. 3  A score of 7 means more pain that a score of 5, and that is more than a score of 3.
Also be sure a hole has not been punched in the bellows as this will cause a vacuum leak. The second thing that causes breaker to blow is simply an old worn out electric pump motor, especially in salt water applications. The third cause is that the holding tank is full and the vent line is plugged.
Clog-prone drains can be regularly maintained by an application of baking soda and vinegar, two common household items. Begin by pouring 1/2 cup of baking soda down the offending drain. Follow it with a cup of white vinegar, then block the drain with its stopper.If it's a double sink, block both. As the vinegar and baking soda react to create carbon dioxide, the trapped gas will exert force on the blockage to clear it.After 15 minutes, remove the plug and pour two quarts of boiling water down the drain.f it's a double sink, block both. As the vinegar and baking soda react to create carbon dioxide, the trapped gas will exert force on the blockage to clear it. After 15 minutes, remove the plug and pour two quarts of boiling water down the drain.