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# regression

noun (regression, regressions)

«regression» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. Going back to an earlier, worse or less developed state. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#m1)
2. (maths, statistics) A way of finding the line or rule that best fits data, to see how one thing changes with another. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#m2)
3. (psychology) When a person, often a child, starts acting younger than their age, for example after a shock. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#m3)
4. (computing) A bug where something that used to work stops working. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#m4)

### In the lessons

In science and maths for older pupils «regression line» or «line of best fit» shows the trend on a scatter graph. In everyday life and health it can describe an illness coming back or a child going back to babyish habits, like a toddler wetting the bed again when a new baby arrives. Phrases: «regression to», «linear regression», «a regression in».

### Examples

- After the new baby came, my little brother showed some regression and wanted a bottle again. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#x1)
- The doctor was worried about a regression in her health. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#x2)
- We drew a regression line through the points on the graph. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#x3)
- The new update caused a regression, and the game crashed again. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#x4)
- Scientists used regression to see how height changes with age. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#x5)
- Sleep regression is when a baby suddenly sleeps badly again. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/#x6)

### Note

Countable in the technical senses. Verb: «regress». Opposite: «progression» or «progress». In maths, a regression line is a best guess of the trend, not an exact rule; points do not all sit on it.

## On Mova

- [Trees and pragmatics of «regression» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/regression/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«regression» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/regression.html) on Mova free.