Intro to Stata – Quiz 3

Quiz Question Explanations

Question 1

This command returns an error message because there are multiple variables that start with the word ‘hindi’ (e.g. hindi_bl, hindi_ely1, etc.).

Stata recognizes ‘su’ as an abbreviation of ‘summarize’. The variables that start with the word ‘hindi’ are all numeric and thus can be included in calculations. You can specify an observation range with ‘summarize’.

Question 2

Enter the command ‘sum *b?’ and count the 7 variables: assessed_bl, total_bl, hindi_bl, math_bl, english_bl, child_class_bl, child_age_bl.

Question 3

Enter the command ‘sum *b*’ and count the 8 variables (all of the ones included with *b? plus child_num_absences): assessed_bl, total_bl, hindi_bl, math_bl, english_bl, child_class_bl, child_age_bl, child_num_absences. child_num_absences is included because there is a ‘b’ in the variable name followed by six more characters. child_num_absences was not included in the last question because the ? wildcard is restricted to a single character.

Question 4

Enter the command ‘sum english_bl’

Question 5

You can also read the SD value off of the command ‘sum english_bl’

Question 6

To view the median value, you must add the ‘detail’ option to the summarize command: ‘sum english_bl, det’