A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: models/Site_model.php

Line Number: 233

Backtrace:

File: /var/www/html/KOL/voice/application/models/Site_model.php
Line: 233
Function: _error_handler

File: /var/www/html/KOL/voice/application/controllers/Exitpage.php
Line: 109
Function: get_keyword_cat

File: /var/www/html/KOL/voice/public/index.php
Line: 319
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: models/Site_model.php

Line Number: 233

Backtrace:

File: /var/www/html/KOL/voice/application/models/Site_model.php
Line: 233
Function: _error_handler

File: /var/www/html/KOL/voice/application/controllers/Exitpage.php
Line: 110
Function: get_keyword_cat

File: /var/www/html/KOL/voice/public/index.php
Line: 319
Function: require_once

疑難雜症萬事通 - 非隨機抽樣 - 前往 http://ir.lib.cyut.edu.tw:8080/bitstream/310901800/22698/10/第十二章 抽樣理論議題討論.pdf
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並前往 http://ir.lib.cyut.edu.tw:8080/bitstream/310901800/22698/10/%E7%AC%AC%E5%8D%81%E4%BA%8C%E7%AB%A0+%E6%8A%BD%E6%A8%A3%E7%90%86%E8%AB%96%E8%AD%B0%E9%A1%8C%E8%A8%8E%E8%AB%96.pdf

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