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Teacher's personal teaching efficacy is the degree to which a teacher believes he or she can teach s

Question: Teacher's personal teaching efficacy is the degree to which a teacher believes he or she can teach students even under difficult circumstances. Researchers believe that teaching efficacy varies according to a number of factors, including, for example, years of experience and number of students in the classroom. Teaching efficacy is measured by summing teachers' responses to a number of items on a inventory. Responses to each item are on a Likert scale that ranges from a low of 1 to a high of 5.

Is there any evidence that teaching efficacy is associated to number of students in the classroom or to years of experience?

Teaching Efficacy	Number of Students in Classroom	Years of Experience
5	12	18
1	25	2
3	20	15
4	10	7
2	22	16
5	14	15
4	16	12
3	22	8
5	9	16
1	30	11
3	20	5
4	14	10
2	23	4
1	25	3
5	13	1
4	17	24
3	19	8
2	17	14