Statements

N

Min

Max

Mean

Std. Deviation

Rank

Materials used

103

1

5

2.96

0.969

1

Design and construction

103

1

5

2.82

0.968

2

Inspection and maintenance of scaffolds

103

1

5

2.63

0.990

4

Lifting appliances on scaffolds

103

1

5

2.41

0.964

5

Use of scaffolds

103

1

5

2.82

0.968

3

Scaffolds and ladders

103

1

5

2.73

0.753