Data

Each sheet of the provided Excel file shows the data related to the ten assets chosen from different industries of the Stock Exchange and Securities Organization of Iran. Since we want to investigate the impact of the pandemic on the stock market, the day when the first positive cases were confirmed must be known. It was on February 26, 2020. The total period should be divided into two periods: before and after the pandemic. To create the same conditions for comparison, the length of these two periods is determined equally. Therefore, the first trading data in this paper is related to January 23, 2018, and the last is associated with September 22, 2021. For clarity, the row corresponding to the day of the first positive case confirmation, which decides the proposed two periods, is specified with a different color. It is noteworthy that Ln and -1 in several column titles indicate the natural logarithms and previous period data, respectively, which are used to test the more minor scales of data along with the lag of data in the EViews software.

所提供的 Excel 文件中的每一页均展示了从伊朗证券交易所与证券组织不同行业精选的十个资产的相关数据。鉴于本研究的目的是探究疫情对股市的影响，因此必须知晓首次确诊阳性病例的日期。该日期为 2020 年 2 月 26 日。研究周期应分为两个阶段：疫情前与疫情后。为了确保比较条件的一致性，这两个阶段的时长被设定为相等。因此，本文所涉及的第一笔交易数据始于 2018 年 1 月 23 日，终止于 2021 年 9 月 22 日。为便于理解，决定所提议的两个阶段的分界点——即首次确诊阳性病例的日期对应的行——被特别标注为不同的颜色。值得注意的是，在多个列标题中出现的 Ln 和 -1 分别代表自然对数和前一期的数据，这些数据在 EViews 软件中用于测试数据的较小尺度及其滞后效应。