All of the following statements are TRUE about finding relationships in data EXCEPT:
A) The covariance and correlation formulas are used to describe linear relationships between data.
B) Covariance is a formula that can calculate the relationship between two variables, like age and dollars spent as well as the direction of the relationship.
C) The correlation formula produces a value between –.1 and 1 that is called the correlation coefficient.
D) The correlation coefficient is represented by the letter "r" in statistics and is a unitless value that describes the strength and direction of a relationship between two variables.
Answer: D
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A lambda expression is
A) an expression whose value can only be assigned to a local variable. B) used by the C++ compiler to check the types of other expressions. C) a class derived from a function object. D) an object of a class whose only member is the function call operator. E) None of the above
Answer the following statements true (T) or false (F)
1) The context in which an exception is handled (or managed) is the throw block. 2) Statements that cause an exception must be part of a try block. 3) A program can continue to run after an exception has been thrown and caught. 4) A function uses an exception specification that includes only int, but an exception of type double is thrown. A catch block is provided that catches a double, so things proceed properly.
In a VRAM-SWWSN, assume the normal transmission range of the radio interface is estimated as 100 meters when using a modulation rate of 64QAM. For creating LLs, rate adaptation is employed in a dynamic manner to two lower modulation rates by adapting to the following two levels: (a) 32 QAM and (b) 8 QAM. Assume the path loss exponent is 2 and the trans- mission power is fixed. Estimate the transmission range of the LLs when operating at the two lower rates. Suggest a method to utilize the two LL ranges in a way to achieve energy efficiency in the SWWSN.
What will be an ideal response?
A ________ displays related records from another table by matching the values in the field that relates the two tables
A) subdatasheet B) linked datasheet C) subset D) joined worksheet