Willpower of data from the given statement
a. Consider the subsequent data- the height in centimetres of children in a fourth-grade class. describe which of the following best describes these data?
1) Attribute data
2) Qualitative data
3) Quantitative data
4) Sample Data
b. A company has developed a new battery however the average lifetime is unknown. In order to estimate the average a sample of 150 batteries is tested as well as the average lifetime of this model is found to be 250 hours. The 250 hours is the value of a-