If the variables are not quantitative we cannot do the arithmetic required in the formulas for r.
<h3>What is a
variable?</h3>
- A variable in mathematics is a symbol and placeholder for a changing quantity or any mathematical object.
- A variable can specifically represent a number, a vector, a matrix, a function, a function's argument, a set, or an element of a set.
Quantitative order:
- Quantitative methods emphasize objective measurements and statistical, mathematical, or numerical analysis of data gathered through polls, questionnaires, and surveys, as well as by manipulating pre-existing statistical data using computational techniques.
- Ordinal-level measurement data can be quantitative or qualitative.
- They can be arranged in ranked order, but differences between entries are meaningless.
- Measurement data at the interval level are quantitative.
- They can be arranged in any order, and meaningful differences between data entries can be calculated.
- We can't do the arithmetic required in the r formulas if the variables aren't quantitative.
Therefore, if the variables are not quantitative we cannot do the arithmetic required in the formulas for r.
Know more about quantitative data here:
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Is is the first one. 1600=.45x
2x-13+3x-8+2x-3+2x-7+3x-1+2x+11+2x+9= (7-2)×180
16x-12=(7-2)×180
(7-2)×180 Work this out on a calculator
And then that answer=16x-12
Then you solve by adding 12 both sides and dividing by 16 both sides to get what x is.
2.8-(-5.1)
-(-5.1)=5.1
2.8+5.1= 7.9
Is this what you were asking?
