Weekend HW!

This weekend please complete the "Calculating Z Scores and Percentiles" worksheet provided in class or linked below. 

• Here's the HW if you need it:
• Calculating Z Scores and Percentiles
• For questions 2a-2e you DO NOT have to show the z scores unless you use a ztable; you can just show a shaded model and your normalcdf work (be sure to label lower, upper, mean, standard deviation
• For 2f, 2g show a shaded model and your invnorm work (be sure to label area, mean, standard deviation, and tail if you have that option)
• For 2H you need to find IQR....
• What is IQR--how do we calculate it?
• Find the two values you need to calculate IQR--think about what percentiles these represent!
• You got this!
• Always check your answers! Here's the key(s):
• HW Key Page 1 (Click Me!)
• HW Key Page 2 (Click Me!)
• The key doesn't have an answer for 2i, so here you go:
• z = 1.4; A person with an IQ of 121 has an IQ that falls 1.4 standard deviations above the average (IQ).