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den301095 [7]
3 years ago
12

A high school teacher conducted a test of a new approach to teaching math. Students were given a pretest when their math class b

egan and a posttest at the end of the semester. The students' math performance improved. The teacher learned near the end of the semester, however, that in their science classes the students were using new computer software that included much of the math the teacher covered in his course. What threats to internal validity does the new computer software represent?
Computers and Technology
1 answer:
MakcuM [25]3 years ago
5 0

Answer:

It represents a threat of instrument change.

Explanation:

Internal validity is a method to determine if research has been performed properly. It is based on the number of confounding variables present in the experiment. If an experiment is carried out and confounding variables are avoided, the internal validity is high, and viceversa. In an ideal context, the experiment's internal validity will be high, which will mean its results will be trustworthy.

The students, by making use of a computer software, lowered the validity of the test performed by the teacher.

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Explanation:

A class / subclass relatonship is not going to be possible here.

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5 0
2 years ago
8.2 code practice edhesive?
Illusion [34]

Answer:

temperatures = []

i = 0

while i < 5:

   try:

       t = int(input('Enter a temperature: '))

       temperatures.append(t)

       i += 1

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print(temperatures)

Explanation:

Hope this helps!

6 0
3 years ago
Which command suppresses the visibility of a particular row or column in a worksheet?
Gwar [14]

Answer:

Hide command suppresses the visibility of a particular row or column in a worksheet

Explanation:

Hide command is used to hide the row or column in an excel worksheet. To suppress the visibility of a particular row or column in a worksheet, you have to select that particular row or column and then right-click on column or row header. A popup screen will appear as like when you refresh the computer. Then on this screen, at the bottom, you will find the hide command, click the hide command. And, as you click the hide command that particular row or column will become invisible. if you want to show it again, click the Unhide command. Therefore, hide command suppresses the visibility of a particular row or column.

Why other options are not correct

Autofit

Autofit command is used when you want that a particular cell of row or column to automatically adjust / or accommodate the content. Autofit command does not affect the visibility of a row or column.

Insert

Insert command is used to insert contents in a particular worksheet. Insert command is based on groups of various commands such as inserting tables, charts, graphs, text, symbols, add-ins, sparklines, and links.

Replace

Replace command is used in excel to replace the text with some other text. If you want to replace some text with some other text, then you have to use the replace command.

8 0
3 years ago
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