Read the following terms and determine which one is inconsistent in this group.

mean, range, variance, standard deviation, mode, refraction

This question was previously asked in

UPSSSC Chakbandi Lekhpal Official Paper 2 (Held on : 30 Sept 2019 Shift 2)

Option 4 : Refraction

The Logic here is as follows:

Terms |
Subject |

Mean | Statistics |

Range | Statistics |

Variance | Statistics |

Standard Deviation | Statistics |

Mode | Statistics |

Refraction |
Physics |

Mean, Range, Variance, Standard deviation, and mode are part of **Statistics**.

Whereas, **Refraction** is a topic related to** Physics**.

Hence, the correct answer is "**Refraction**".

__Additional Information__

__ Mean__: In mathematics and statistics, the arithmetic mean, or simply the mean or the average, is the sum of a collection of numbers divided by the count of numbers in the collection.

__ Range__: In statistics, the Range is the difference between the lowest and highest values.

__ Variance__: In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean. In other words, it measures how far a set of numbers is spread out from their average value.

__ Standard Deviation__: In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values.

__ Mode__: The mode is a statistical term that refers to the most frequently occurring number found in a set of numbers.

__ Refraction__: In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction.