Definitions for cross-sectional
cross-sec·tion·al

Princeton's WordNetRate this definition:0.0 / 0 votes

1. cross-sectionaladjective

   of or relating to a cross section

   "a cross-sectional slice"

2. cross-section(a), cross-sectionaladjective

   representing a plane made by cutting across something at right angles to its length

   "cross-section views of the neck"

WikipediaRate this definition:0.0 / 0 votes

1. cross-sectional

   Cross-sectional data, or a cross section of a study population, in statistics and econometrics, is a type of data collected by observing many subjects (such as individuals, firms, countries, or regions) at the one point or period of time. The analysis might also have no regard to differences in time. Analysis of cross-sectional data usually consists of comparing the differences among selected subjects. For example, if we want to measure current obesity levels in a population, we could draw a sample of 1,000 people randomly from that population (also known as a cross section of that population), measure their weight and height, and calculate what percentage of that sample is categorized as obese. This cross-sectional sample provides us with a snapshot of that population, at that one point in time. Note that we do not know based on one cross-sectional sample if obesity is increasing or decreasing; we can only describe the current proportion. Cross-sectional data differs from time series data, in which the same small-scale or aggregate entity is observed at various points in time. Another type of data, panel data (or longitudinal data), combines both cross-sectional and time series data ideas and looks at how the subjects (firms, individuals, etc.) change over a time series. Panel data differs from pooled cross-sectional data across time, because it deals with the observations on the same subjects in different times whereas the latter observes different subjects in different time periods. Panel analysis uses panel data to examine changes in variables over time and its differences in variables between selected subjects. In a rolling cross-section, both the presence of an individual in the sample and the time at which the individual is included in the sample are determined randomly. For example, a political poll may decide to interview 1000 individuals. It first selects these individuals randomly from the entire population. It then assigns a random date to each individual. This is the random date that the individual will be interviewed, and thus included in the survey.Cross-sectional data can be used in cross-sectional regression, which is regression analysis of cross-sectional data. For example, the consumption expenditures of various individuals in a fixed month could be regressed on their incomes, accumulated wealth levels, and their various demographic features to find out how differences in those features lead to differences in consumers’ behavior.

ChatGPTRate this definition:0.0 / 0 votes

1. cross-sectional

   Cross-sectional refers to a type of study or analysis that involves observations of a sample population or a representative subset at a specific point in time. It may also be described as a section cut at right angles to the long axis of a structure. It often provides data that is analyzed to draw inferences about the larger population.

How to pronounce cross-sectional?

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How to say cross-sectional in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of cross-sectional in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of cross-sectional in Pythagorean Numerology is: 1

Examples of cross-sectional in a Sentence

1. Kristen Knutson:

   It's a cross-sectional study, so we can't say anything about cause and effect or what came first, the mood disorder or the circadian disruption, and it's likely they affect each other in a circular fashion.

2. Bhanuprakash Kolla:

   This study is cross-sectional, looking at sleep problems at a given point in time, and therefore we can not make any inferences about whether the differences are actually due to the effect of cannabis.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=cross-sectional
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Cross-Sectional
3. ^ ChatGPT
   https://chat.openai.com