Statistics Test 1 Flashcards
According to our syllabus, students may be dropped when they have how many unexcused absences?
4
State the 25% Rule?
The professor will provide 25% of the exam questions
What is the meaning of the Latin phrase, “labor omnia vincit”?
Persistant work will conquer all
Which level of measurement is brands of PC’s?
Nominal
The national research center provides the following answers for marital status: married, widowed, divorced, never married, & separated. The level of measurement is?
None of these
What level of measurement is religion (Catholic, Muslim, Protestant, Jewish, and Other)?
Nominal
What level of measurement is subjective economic status?
Ordinal
Which level of measurement is preferences for brands of tequila?
Ordinal
Which level of measurement is rank in the MT 1305 class?
Ordinal
Which level of measurement is controversial?
Ordinal
Which level of measurement is LTHS, HS, GTHS?
Ordinal
Intersectioons of rows and columns in tables are called?
Cells
Columns are to captions as rows are to:
Stubs
Frequency distributions come from another tool called
Tally sheet
The total of a column of proportions is always
10
A tool that graphically shows percentages is the
Pie Chart
The philosophy that holds that outcomes have causes that can be changed to improve outcomes is
Determination
The most widely used tool in business & finance is
Run Charts
Managers have many averages from which to choose. How should they decide?
Managers choose from the average that is most REPRESENTATIVE. The larger the difference the less representative the mean. The smaller the difference the higher the representative.
What percentage of an array is larger than the first quartile?
75%
Q2 is the same number as which average?
Median, Md
Name a component of the DIJA
Walmart
When the bartender at Trevino’s Gift shop and bar in Reynosa gave me her recipe for martinis, it reminded us of which statistical tool?
Ratio
A pie chart is a graphic representation of data based on which statistical tool?
Percentages
The average that can provide multiple answers for the same data set is the:
Mode
Which average is mathematically sound and can be used for subsequent analyses?
Mean
The average used by the U.S. government to report economic, labor force, & census information is:
Median
In an accounting course, there are four exams worth 25% each. If Medina made 75, 80, 90 on the first three, what is the lowest grade she can make on the fourth to receive a B- (80.0)?
75
Which of these tools is not admissible with nominal data?
Mean
The trimmed mean is the mean of the middle _______ percent of an array.
90
The inter-quartile mean is the mean of the middle _______ percent of an array.
50
The _______ quartile is the the same as the 25 percentile
First
Which level of measurenment is not a classification scale
All are classification scales
What is the median of 24,26,27,29,30,31,32,32?
29.5
A sample of personal files shows employees lost these numbers of days to absenteeism: 2,0,6,3,10,4,1,2. What is the mean average deviation?
2.38
The aim of using a measure of variation is:
to double check the mean to see if the mean is representative or not.
Which of these polygons has the smallest standard deviation?
Leptokurtic
With skewness, which measure of central tendency is always at the maximum ordinate?
Mode
A normal curve can be skewed?
False
When the tails of a normal curve approach but never touch the baseline, it is said to be:
Asymptotic
In a normal curve, the three main measures of central tendency always lie at the maximum ordinate?
True
Who originated the normal curve?
Gauss
