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WGU C784 APPLIED HEALTHCARE STATISTICS EXAM ALL
ACTUAL EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS ALREADY GRADED A+
WGU C784 APPLIED HEALTHCARE STATISTICS EXAM A
If a problem only contains multiplication and division they are considered equal and you work from left to right (same when the problem only contains addition and subtraction -- work it left to right)
So: 64 divided 2 * 3 = Work it Left to right 64 divided by 2 = 32 x 3 = 96
A ??? is a positive integer with exactly two positive factors*, 11 and itself; it cannot be divided evenly by any other two integers. For example, the only positive numbers that divide 33 are 11 and 33. Therefore, 33 is a prime number. Prime numbers play an important role in factoring, which we will explore later in this module.prime number prime numbers, only 1 and itself like 29 It is a prime number. Prime numbers are always odd Composite number 15--can divide by 1, 3, 5 so it is composite 2, 3, 5, 7 are all what type of numbers Prime Prime factorization Breaking down a composite number until all of the factors are prime (like 9 is 3 and 9 ) 1 / 4
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2 Mean values The mean* is one of the most useful measures of central tendency. The mean, also known as the average, is a single value that represents the center of a set of data values. Mean can be substantially influenced by one or more extreme values in a data set (think skewed data), so mean is only used when the data is symmetric. Therefore, we say that the mean is not a resistant measure of center. So if you have 6+3+8+4 the numerical summary is 21. The "mean" value is 21 / 4 so 5.25 (the sum divided by however many numbers you have.Median value The second measure of central tendency is the median*. The median is the "halfway" point of a set of values; an equal number of values will fall above and below the median of a data set.Unlike the mean, the median is not overly influenced by extreme values in the data set, so we can use the median when the data is skewed. Therefore, we say that the median is a resistant measure of center. To properly find the median, values must be first sorted from smallest to largest.A union of two sets is a collection of the elements listed in both of the sets. True or False?This is a false statement. A union of two sets is a collection of all of the elements listed in the sets.C={2,4,6}C={2,4,6}D={1,3,5}D={1,3,5}The union of CC and DD is {1,2,3,4,5,6}{1,2,3,4,5,6}, as those are all of the elements that appear in the sets.The intersection* of two sets is a collection of the elements listed in both of the sets.
For example:
E={0,10,100}E={0,10,100}F={−2,−1,0,1,2}F={-2,-1,0,1,2}The intersection of EE and FF is {0}{0}, as 00 is the only element that appears in both sets. 2 / 4
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3 Empty Set--- An empty set* is a set that has no elements. There is nothing in the set; therefore, it is empty.This may seem odd, or even like it isn't a set at all, but an empty set is, in fact, a set.For example, let's say you wanted to list the days of the week that do not end in a y. There are none! Therefore, this is the empty set. In set notation, the empty set is written as a pair of
brackets with nothing between them:
{} subset In math and statistics, we often work with multiple sets at once. These sets can relate to one another. One such relation is known as a subset.Set AA is a subset* of set BB, if every element in AA is contained within BB.
For example:
A={1,2,3}A={1,2,3}B={1,2,3,4,5}B={1,2,3,4,5}AA is a subset of BB, because every element in set AA is contained within set BB.Rational number (aka 'fractional') Numbers that can be expressed as a fraction Integers Solid positive and negative numbers Real Numbers A real number is any number that can be placed on the number line, whether that be negative or positive, fraction or decimal. 3 / 4
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4 True or False? Any integer is also a whole number.This statement is false. An integer can be negative, such as the number −100-100. −100-100 is not a whole number.Read all the options before answering. −17-17 is... (a. an integer b. a rational number c. a real number d. all of the above.)
- all of the above. −17-17 is an integer, and all integers are also rational numbers, which in
turn are real numbers.In math, you may be asked to "evaluate an expression."--what does that mean?solve the problem When multiplying a positive number by a negative number, the product will always be
NEGATIVE
Multiplying a negative number by a negative number results in a Positive product (The product of two negatives will always equal a positive.) The result of the division of two negative numbers is always
POSITIVE
Zero in multiplication = The product* of multiplication with zero will always equal zero; whether multiplying by a positive or a negative, any integer multiplied by zero will result in zero as the product.8(superscript 0) Any non-zero number with an exponent of 0 (or raised to the zero power) equals 1.
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