Exhibit 7-7: a Group of Curriculum Designers Has Developed a New

question 21

Multiple Choice

Exhibit 7-7: A group of curriculum designers has developed a new system for teaching phonics to young children.They randomly selected 24 kindergarten students to receive either the old phonics method or the new phonics method.The designers realized that kindergartens have morning and afternoon classes, so they wanted to build this factor into the research design.The following is the mean, standard deviation, and number for each group.
$\begin{array}{lll}\text { Morning } & {\text { Old }}{} & {\text { New }}{} \\ & 16.33 & 13.50 \\ &1.03 & 2.74 \\& 6 & 6 \\ \text { Afternoon } & 13.17 & 16.83 \\ & 3.55 & 2.14 \\ & 6 & 6\end{array}$
The following is an incomplete summary table of the analysis of variance:
$\begin{array}{ll}\underline { \text { Source }} & \underline { \text { SS }} & \underline { \text { df }} & \underline { \text { MS}} & \underline { \text { F}}\\\text { Time of Day } & 0.042 \\\text { Lesson Design } & 1.042 \\\text { Interaction }\\\text { Error } & 128.500 \\\text { Total } & 102950\end{array}$
-Refer to Exhibit 7-7.What is the sum of squares for the interaction?

• A) 63.375
• B) 64.459
• C) 127.416
• D) None of these are true.

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Definitions:

Voucher Prepared

involves the creation of a document that authorizes a financial transaction and substantiates the details of that transaction.

Periodic System

An inventory system where updates to inventory levels are made periodically, as opposed to continuously.

Voucher Systems

A control and documentation system used in accounting to process and monitor transactions.

Net Method

An accounting method where discounts for early payment are assumed to be taken and sales or purchases are recorded at their net of discount values.