What is the goal of descriptive statistics? Answer: Statistics

Quiz Instructions
1. List the 6 major goals of statistics
Answer: The goals of statistics are computation of data, concepts of probability,
concepts of survey and questionnaire, concepts of data science, concepts of
stochastic process, and concepts of linear modeling, concepts of game theory and
so on.
2. What is the goal of descriptive statistics?
Answer: The goal of descriptive statistics is that to provide the summary of data. Moreover
it is also plays an important role in the quantitative study.
3. What is the goal of inferential statistics?
Answer: The goal of inferential statistics is that to give conclusion on sample and
generalized population. Moreover the common goal of inferential statistics is that hypothesis
testing and analysis of variance.
(True or false)
4. A higher standard deviation value indicates greater consistency and stability in a
data set.
False
5. Which notation represents the population mean?
Group of answer choices
Σ
N
μ
X
6. For the following normal distribution, identify the values on the x-axis
representing the mean , median and mode
0 0

7. Identify two circumstances in which the median rather than the mean is
the preferred measure of central tendency.
Answer: The two circumstances are when the data set is skewed and when the
data set is ordinal.
8. What is the definition of variability?
Answer: The term variability can be used when the data is not consistent. In other
words when the data set differ from the mean values of this data set, then it is called
the variability.
9.What is the best measure of variability? Choose the best answer below.
sum of squares
range
standard deviation
semi-interquartile range
10.True or false, the denominator formula, n-1, used as the denominator in the
computational formula for sample standard deviation represents the degrees of
freedom.
Answer: True
11. True or false, The variance, or distance calculated between sample data and
its corresponding population data is considered a mathematical error.

Answer: False
12. Identify at least one benefit to operationally defining a construct.
Answer: The operationally defining construct helps in class survey. The class are like
gender, attendance and level of extraversion. Moreover it also helps to determine the
dependent and independent variables.
13. As it relates to your environment, identify two different populations and any
corresponding sample group for each population.
Answer: The two different populations are the results of a college and the height of
student of the college. The samples of this population are the results of some particular
class or particular gender and the height of some particular class and the height of a
particular gender.
14. Weight is a typical measurement taken in the doctors office. On
what scale does the variable of weight fall?
Group of answer choices
Ordinal
Ratio
Nominal
Interval
15. A satisfaction survey was given to conference participants. The answers
included very dissatisfied, dissatisfied, satisfied, very satisfied. Which scale of
measurement is this survey?
Group of answer choices
Ratio
Nominal
Interval
Ordinal