Mannitol (also referred to as mannite or manna sugar) is a white, crystalline solid that looks and tastes sweet like sucrose.It was originally isolated from the secretions of the flowering ash and called manna after its resemblance to the Biblical food.In plants it is used to alleviate osmotic stress.annitol has several industrial uses, but is mainly used to produce tablets of medicine. Its fetal safety is C (FDA pregnancy category: risk not ruled out) in Briggs' Reference Guide to Fetal and Neonatal Risk.
Levels of Measurement. What they are; They are the different ways numbers can be used. NOMINAL LEVEL. Numbers can be used as tags or labels, where the size of the number is arbitrary. Barcodes and social security numbers are two examples. We could use the name of the merchandise or person equally well, but we choose numbers instead.
Ratio Level of Measurement. The fourth and highest level of measurement is the ratio level. Data at the ratio level possess all of the features of the interval level, in addition to a zero value.Due to the presence of a zero, it now makes sense to compare the ratios of measurements. measurement such as 0 feet does make sense, as it represents no length. Furthermore 2 feet is twice as long as 1 foot. So ratios can be formed between the data. At the ratio level of measurement, not only can sums and differences be calculated, but also ratios.