The phrase "assortment of techniques" is correct and usable in written English.
You can use it when referring to a variety of methods or approaches used to achieve a particular goal or outcome.
Example: "In our research, we employed an assortment of techniques to analyze the data effectively."
Alternatives: "variety of methods" or "collection of strategies."
Rejewski and his two mathematician colleagues then developed an assortment of techniques for the regular decryption of Enigma messages.
When a motorist is stopped, police use an assortment of techniques to search the motorist, his car and his belongings -- trained canine sniffers, consent searches, inventory searches and searches pursuant to the arrest for the innocuous traffic violation.
Using an assortment of photographic techniques they present their war-torn city as a space of missing persons and places.
Over the years, our research has involved an assortment of qualitative techniques, namely ethnographic observation and informal interviews.
The proper assortment of surface analytical techniques allowed confirming the chemical structure of the silicon surface after modification steps and the trypsin digestion of the peptides.
That is why teams and drivers have an assortment of mental tricks and techniques for self-control.
As the fledgling writer Ruth Sherwood, the role that Rosalind Russell slayed 'em with when "Town" opened in 1953, Ms. Murphy blithely juggles a wide assortment of gleaming styles and techniques without ever breaking character.
Advances in computing technology have been instrumental in creating an assortment of powerful information visualization techniques.
Also, an assortment of quantitative CBF measurement techniques have appeared in the past two decades, permitting relatively precise and quantitative analyses of the effects of hyperdynamic therapy.
At forbes.com/taxplanning our resident expert, Janet Novack, has assembled an assortment of stories on tax-minimizing techniques, not all of them involving screwdrivers.
There are several proven ways to isolate carbon dioxide from fossil fuels, using a variety of combustion techniques and an assortment of chemical "scrubbers" to react with the gas.
