The phrase "an increase in quantity" is correct and usable in written English.
It can be used when discussing growth or expansion in numbers or amounts in various contexts, such as business, economics, or statistics.
Example: "The report indicated an increase in quantity of products sold over the last quarter."
Alternatives: "a rise in amount" or "an uptick in numbers".
Conn, C. S. & Qian, S. B. Nutrient signaling in protein homeostasis: an increase in quantity at the expense of quality.
Obviously the SID hypothesis is contrary to demand and supply analysis that shows that an increase in the number of suppliers leads to an increase in quantity demanded due to the price effect.
According to Wicksell, money would be created endogenously, without an increase in quantity of hard currency, as long as the natural exceeded the market interest rate.
Post-assessment of the children illustrated that self-control can transfer to untrained dimensions of reinforcement; such as an increase in quality over immediacy preference due to direct training resulting in an increase in quantity over immediacy preference.
Finally, concerns were raised that an increase in quantity of data would lead to problems with standardisation and data quality.
These results are in accordance with that of Gancarz et al., 2003 [ 23], who observed that an increase in surface epoxy groups led to an increase in quantity of immobilized enzyme, but a decrease in retained enzyme activity.
Keeping in mind that the increment in the amount of DNA suggests an increase in the quantity of virions and it should be accompanied by an increment in the viral transcription activity, an mRNA analysis was done.
Elasticities of demand are interpreted as follows: A decrease in the price of a good normally results in an increase in the quantity demanded by consumers because of the law of demand, and conversely, quantity demanded decreases when price rises.
Alongside a cut in the price of money, the MPC also announced an increase in the quantity of money via a new programme of asset purchases covering £60bn of government bonds and £10bn of corporate bonds.
It reported: "Feedback from retailers suggests that the warmer than average weather resulted in an increase in the quantity bought as consumers brought forward the purchase of summer clothes".
