Backwards Variances

System
System Posts: 100,534 🤖 Admin 🤖
edited 10:08AM in AAT student discussion
Please can anyone help - am really starting to panic now!<BR><BR>I have just read on the forum about backwards variances and have no idea what they are. Is there another name for them by any chance?<BR><BR>Also does anyone know how reliable the predictions in PQ are?<BR><BR>Thanks!

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