Answer:
6
Step-by-step explanation:
Answer: D.
Step-by-step explanation:
1. Look at the range/IQR of each box-plot
2. The smaller the range = the less variability
The national interest rate on houses for 25 years is 4.3%. The banker wishes to test that the local interest rates are lower than the national rate. So he should use the initial data of 4.3% interest as his base data. Then he should investigate the rates of houses in the local vicinities and compare it to his base data.