The phrase "a relatively broad range" is correct and usable in written English.
It can be used to describe a wide variety or scope of something, often in contexts like discussions of options, choices, or characteristics.
Example: "The study examined a relatively broad range of factors that influence consumer behavior."
Alternatives: "a fairly wide array" or "a somewhat extensive range".
While in Germany and the Netherlands the art was completely dominated by devotional, religious subject matter, Italian printmaking covered a relatively broad range.
The obtained results show that the proposed control scheme provides good dynamic behaviour, even if the plant parameters vary in a relatively broad range.
Due to the differences in molecular characteristic, this series exhibited a relatively broad range of crystallite sizes as well as crystallinity level, varying from 10 wt% up to more than 70 wt%.
The slippage threshold, which is the transition point between the two branches, can be adjusted within a relatively broad range, and can thus control the shape of the force displacement curve of the element.
Due to the differences in molecular characteristic, this series exhibited a relatively broad range of crystallite sizes as well as crystallinity level, varying from less than 10% up to more than 70%.
The eutectic photoanode was prepared using eutectic solidification to couple two photoactive phases with different band gaps – titanium dioxide (TiO2) and tungsten trioxide (WO3) – and thereby achieve efficient absorption across a relatively broad range of UV and visible light wavelengths.
Although the freshwater wetland showed a relatively broader range of phylotypes, the majority of the clones (113 out of 117) fell into Ca. Scalindua brodae, only one clone affiliated with Ca. Scalindua wagneri, and three clones with a unique new cluster Y.
The dependence of the α ME on f shows an increase of the magnitude of ME response of the sample within relatively broad range of frequency 0 5 kHz (Fig. 8b).
But, within the relatively broad range of between five and twenty-five per cent, you can add water and some flavoring and most people can't tell the difference.
The Black-headed Parrot breeds in tree-cavities, and lays two eggs, but the breeding season perhaps varies across its relatively broad range.
