I ran a Cronbach Alpha analysis and these are the results.

1. Do I delete the S3 and S7 in my questionnaire?
2. Do I have to re-run Cronbach Alpha once I have deleted S3 and S7? When I tried to delete S3 and S7 and re-run it, the Cronbach Alpha got really low.
3. What do I do for an acceptable Cronbach Alpha for this construct in my questionnaire?

Summary for scale: Mean=33.6364 Std.Dv.=3.64068 Valid N: 11 Cronbach alpha: .748362 Standardized alpha: .752724 Average inter-item corr.: .266795 Mean if Var. if StDv. if Itm-Toti Alpha if variable deleted deleted deleted Correl. deleted $1 30. 18182 9.96694 3. 157046 0.399323 0.729478 S2 30.45455 9.70248 3.114880 0.562984 0.707198 S3 30.27273 9.47107 3.077511 0.792715 0.685209 S4 29.81818 10.87603 3.297883 0.402835 0.733473 $5 30.27273 9.10744 3.017853 0.504117 0.712568 S6 30.36364 9.32231 3.053246 0.473001 0.718085 $7 30.45455 8.61157 2.934548 0.696376 0.678023 S8 30. 18182 11.05785 3.325335 0. 128899 0.768498 S9 30.54545 11.70248 3.420889 0.023489 0.772246 S10 30. 18182 10.51240 3.242283 0.260513 0.750000