The answer is Count. Count is an aggregate method in SQL that returns the number of rows for a specified column that have non-null values.
<h3>What is the Meaning of Null?</h3>
When a field in a database has no values at all, this is known as null and indicates that the field’s value is unknown.
A null value for a number field, text field, or space value is different from a zero value. Null indicates that no value has been recorded in a database field.
A value and a null cannot be compared. The Structured Query Language query cannot be written as SELECT * FROM Customer where email Address=null, for instance, if it is intended to obtain all customers without email addresses from a Customer Addresses table.
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The correct answer is Prospect theory effect
Prospect Theory (also called Perspective Theory) is a concept of cognitive psychology that is related to decision making in economic and financial contexts.
According to this theory, people, in general, tend to make choices based on potential losses rather than gains. In other words, the basis of the Prospectus Theory is the tendency that we all have to harbor a certain risk aversion.
Executive,legislative,judicial
A and C for sure but thats all i can help with
<u>Answer</u>:
Instrumentation
<u>Explanation</u>:
Instrumentation internal validity threat:
<u><em>There are seven instruments internal threat are as follows:
</em></u>
<u>Instrumentation</u>: It is very important for research that the instrument used for the research should be accurate in their measurement because its accuracy will be responsible for the outcomes of the study.