Exercise 2 (4 points) Here are some statistics about home sales by two competing real estate agencies. Sales prices were measured in euros. Agency A Agency B Mean 240 000 350 000 Variance 3 249 000 000 3 721 000 000 Standard deviation 57 000 61 000 Coefficient of variation 0,24 0,17 a. Interpret the central tendency and variation of sales prices realised by agency A. b. Which measure do you think is best suited to compare the variation in sales prices between the two agencies? Why? Choose the appropriate indicator and interpret.

The accompanying normal probability plot was constructed from a sample of 30 readings on tension for mesh screens behind the surface of video display tubes used in computer monitors. does it appear plausible that the tension distribution is normal? the given probability is has a significant downward curve, so it is plausible that the tension distribution is normal. the given probability is has a significant downward curve, so it is not plausible that the tension distribution is normal. the given probability is quite linear, so it is plausible that the tension distribution is normal. the given probability is has a significant upward curve, so it is not plausible that the tension distribution is normal. the given probability is quite linear, so it is not plausible that the tension distribution is normal.