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Statistics > Statistics Test 1 > Flashcards

Statistics Test 1 Flashcards

1
Q

According to our syllabus, students may be dropped when they have how many unexcused absences?

A

4

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2
Q

State the 25% Rule?

A

The professor will provide 25% of the exam questions

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3
Q

What is the meaning of the Latin phrase, “labor omnia vincit”?

A

Persistant work will conquer all

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4
Q

Which level of measurement is brands of PC’s?

A

Nominal

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5
Q

The national research center provides the following answers for marital status: married, widowed, divorced, never married, & separated. The level of measurement is?

A

None of these

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6
Q

What level of measurement is religion (Catholic, Muslim, Protestant, Jewish, and Other)?

A

Nominal

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7
Q

What level of measurement is subjective economic status?

A

Ordinal

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8
Q

Which level of measurement is preferences for brands of tequila?

A

Ordinal

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9
Q

Which level of measurement is rank in the MT 1305 class?

A

Ordinal

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10
Q

Which level of measurement is controversial?

A

Ordinal

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11
Q

Which level of measurement is LTHS, HS, GTHS?

A

Ordinal

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12
Q

Intersectioons of rows and columns in tables are called?

A

Cells

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13
Q

Columns are to captions as rows are to:

A

Stubs

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14
Q

Frequency distributions come from another tool called

A

Tally sheet

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15
Q

The total of a column of proportions is always

A

10

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16
Q

A tool that graphically shows percentages is the

A

Pie Chart

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17
Q

The philosophy that holds that outcomes have causes that can be changed to improve outcomes is

A

Determination

18
Q

The most widely used tool in business & finance is

A

Run Charts

19
Q

Managers have many averages from which to choose. How should they decide?

A

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.

20
Q

What percentage of an array is larger than the first quartile?

A

75%

21
Q

Q2 is the same number as which average?

A

Median, Md

22
Q

Name a component of the DIJA

A

Walmart

23
Q

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?

A

Ratio

24
Q

A pie chart is a graphic representation of data based on which statistical tool?

A

Percentages

25
Q

The average that can provide multiple answers for the same data set is the:

A

Mode

26
Q

Which average is mathematically sound and can be used for subsequent analyses?

A

Mean

27
Q

The average used by the U.S. government to report economic, labor force, & census information is:

A

Median

28
Q

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)?

A

75

29
Q

Which of these tools is not admissible with nominal data?

A

Mean

30
Q

The trimmed mean is the mean of the middle _______ percent of an array.

A

90

31
Q

The inter-quartile mean is the mean of the middle _______ percent of an array.

A

50

32
Q

The _______ quartile is the the same as the 25 percentile

A

First

33
Q

Which level of measurenment is not a classification scale

A

All are classification scales

34
Q

What is the median of 24,26,27,29,30,31,32,32?

A

29.5

35
Q

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?

A

2.38

36
Q

The aim of using a measure of variation is:

A

to double check the mean to see if the mean is representative or not.

37
Q

Which of these polygons has the smallest standard deviation?

A

Leptokurtic

38
Q

With skewness, which measure of central tendency is always at the maximum ordinate?

A

Mode

39
Q

A normal curve can be skewed?

A

False

40
Q

When the tails of a normal curve approach but never touch the baseline, it is said to be:

A

Asymptotic

41
Q

In a normal curve, the three main measures of central tendency always lie at the maximum ordinate?

A

True

42
Q

Who originated the normal curve?

A

Gauss

Statistics (4 decks)

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