The Best Way of Improving the Resistance of External Walls

question 2

Multiple Choice

The best way of improving the resistance of external walls to airborne sound transmission is to

• A) Separate the external and internal parts of the wall
• B) Increase the porosity of the wall
• C) Use galvanised strip wall ties
• D) Use polystyrene bead insulation in the cavity
• E) Increase the density of the wall

---

Definitions:

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the values differ from the mean.

Correlation Coefficient

A statistical measure that indicates the extent to which two variables fluctuate together, revealing the strength and direction of a relationship between them.

Happiness

A state of well-being and contentment characterized by positive emotions and satisfaction with life.

Friends

People with whom someone has a mutual connection of fondness, usually not including romantic or familial ties.