What are two important guidelines to follow in making a good set of measurements?

a) Right scale for right entity to be measured.

b) Minimum measured value

Explanation:

The first and foremost essential requirement for making a good set of measurements is to use a scale of measurement with which the target unit can be measured for example you cannot measure volume by a scale thus only a linear unit can be measured by a scale.

The second important thing is to look into the scale for its least measurement value as this will help to decide the right application of scale being used for measurement.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.