B2. Now, for the same variable (age1bir), determine the median, mode, and quartile values, using the Frequencies procedure (Analyze ➞ Descriptive Statistics ➞ Frequencies).

When the dialog box appears, “uncheck” the box that says

“Display Frequency Tables.” (Why do you think we recommended this?) Move age1bir into the variable list, then click the Statistics pushbutton. In the upper left corner, for Percentiles, click quartiles. For Central Tendency, click mean, median, and mode. For Dispersion, click all options except Std. Error. Now, answer these questions:

(a) What are the values of the median and mode?

(b) Are the values for the mean, SD, and so on the same as in Exercise B1?

(c) What are the quartile values?

(d) What is the value of the IQR?

(e) Based on the three indicators of central tendency, what can you infer about the shape of the distribution?