What is the difference between biased and unbiased in E. L.A.?

The graph below plots the temperature and luminosity of stars on the main sequence.

The standard deviation of a population is 3.2.what is the margin of error? enter your answer in the box.

Which statement best explains the relationship between an area's geography and the temperature of its surface water? areas at low altitudes have the warmest water because they receive the most direct sunlight. areas at low altitudes have the warmest water because they have the least change in temperature throughout the year. areas at high latitudes have the warmest water because their days are the longest. areas at high latitudes have the warmest water because they have the longest seasons.