Answer:
hello
Step-by-step explanation:
Answer:
X= -6 7/8
Step-by-step explanation:
(9 1/4) + (-6 7/8)= 2 3/8
Answer:
“A random variable is one whose values describe the outcome of some chance process”
Step-by-step explanation:
Roughly speaking, a random variable is a function whose values depend on outcomes of a random phenomenon.
The phenomenon could be an experiment created by human beings, a natural process or any other kind of event that produces results that cannot be foreseen with a deterministic model like a differential equation or formula of any kind.
<em>
The random variable must also be a measurable function. </em>
Since its value cannot be predicted in a deterministic way, we usually approximate its possible values with probabilistic measures.
So, from the possible choices of answer, the one that fits the best is
“A random variable is one whose values describe the outcome of some chance process”
Answer:
Correct option is (B) descriptive statistical method
Step-by-step explanation:
Descriptive statistics branch in statistics deals with the representation of the data using distinct brief coefficients. These coefficients are used as either the representative of the sample or the population.
The descriptive statistics branch is divided into two sub branches:
- Measure of central tendency
- Measure of dispersion.
The three measures of central tendency are:
- Mean (or Average)
- Median
- Mode.
The measures of dispersion are:
- Variance
- Standard deviation
- Range
- Kurtosis
- Skewness
The education researcher computes the average number of hours student study at various local colleges.
The average of a data is the mean value which is the measure of central tendency.
Thus, the researcher is using descriptive statistical method to summarize the data.
