My set of scales at home always tells me that I am 65kg. I weigh myself three times a week and this is always the measurement. When I weighed myself at the GPs today I was actually 62kg.
What does this say about the reliability and validity of my home scales?

Question

My set of scales at home always tells me that I am 65kg. I weigh myself three times a week and this is always the measurement. When I weighed myself at the GPs today I was actually 62kg. 
 What does this say about the reliability and validity of my home scales?

Answer

They are high in reliability and validity

Answer

They are low in reliability and validity

Answer

They are high in reliability and low in validity

Answer

They are high in validity and low in reliability

Crowdly

My set of scales at home always tells me that I am 65kg. I weigh myself three ti...

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