DATAS dictionary

	A	B	C	D	E	F
1	column name	description	source	data type	example values	range of values
2	student_id	Unique identifier for each student	School database	String	12345, S67890	Unique values per student
3	session_topic	Subject of the tutoring session	Tutoring records	String	"math", "ela"	"math", "ela"
4	session_date	Date of the session (YYYY-MM-DD)	Tutoring records	Date	2024-06-15	Valid date format
5	session_duration	Duration of the session in minutes	Tutoring records	Integer	45, 60	Positive integers
6	session_ratio	Student-to-tutor ratio	Tutoring records	String	"1:1", 2:5	Any ratio format or float
7	tutor_id	Unique identifier for each tutor	Tutor database	String	T54321, 98765	Unique values per tutor
8	Example Dataset
9	Example Dataset
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