Question

An economist has a dataset that contains the daily closing value of NASDAQ for each trading day during 2016. Is this a cross-sectional dataset or a time-series dataset?[1 point]

Answer 1

Answer : a Time series Dataset

Explanation :

$\rightarrow$Cross Sectiional data are the data collected at the same or approximately the same point in time.

e.g.,It referred to data collected by observing many sabjects at the same point of time or without regard to difference in time .

-) The analysis of cross sectional data usually consists of comparing the differences among subjects.

$\rightarrow$Time Series data are gathered on a given characteristic over a period of time at regular interval of time.

I.e. It is the data collected over several time period.

-) The analysis of Time series data includes the process of extracting meaningful statistics and other characteristics of data.