From: Solar energy implementation at the household level: Gaza Strip case study
 | Number | Arithmetic average | Standard deviation | "T" test | Level of significance |
---|---|---|---|---|---|
Environmental benefit | |||||
 Yes | 99 | 3.534 | 0.894 | 0.864 | 0.389// |
 No | 101 | 3.41 | 1.131 | ||
Initial solar system cost | |||||
 Yes | 99 | 3.477 | 0.828 | 1.202 | 0.231// |
 No | 101 | 3.318 | 1.034 | ||
Economic savings | |||||
 Yes | 99 | 3.709 | 0.801 | 1.624 | 0.106// |
 No | 101 | 3.497 | 1.029 | ||
The total | |||||
 Yes | 99 | 3.573 | 0.743 | 1.335 | 0.183// |
 No | 101 | 3.408 | 0.991 |