Measurement and evaluation of human performance Flashcards

0
Q

Standard deviation

A

A measure of the spread of the data values around the mean

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1
Q

Mean

A

Sum of values by the number of values (average)

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2
Q

Assuming standard deviation is not skewed: how many of data fall within 1 +- standard deviation

A

68%

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3
Q

Assuming data is not skewed: all data falls within 2 +- standard deviation

A

95%

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4
Q

What does standard deviation tell us if small?

A

Small sd means that data is closely clustered around the mean value. Data points are close to the same value (mean)

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5
Q

What does standard deviation tell us if large?

A

Means the data is wider spread around the mean. Data points are spread over a larger range of values( data isn’t so reliable)

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6
Q

Error bars

A

Are used to represent the variability of data (sd) graphically

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7
Q

What do large error bars indicate?

A

A large range above and below the mean gives less confidence that the mean is the true value

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8
Q

Coefficient of values

A

The SD represented as a percentage
Calculated as SD/ mean x 100
Acts as reliably when taking repeated measurements

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9
Q

The t test

A

Is used to measure whether there is a significant difference between the means of the two populations

Tells u the probability that two sets of data are the same

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10
Q

Null hypothesis

A

States that there is no significant difference between the two populations

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11
Q

Alternative hypothesis

A

States that there is a significant difference between the two populations

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12
Q

If p > 0.05 accept

A

Null hypo

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13
Q

If p< 0.05 accept

A

Alternative hypothesis

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14
Q

Coefficient of values

A

The SD represented as a percentage
Calculated as SD/ mean x 100
Acts as reliably when taking repeated measurements

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15
Q

The t test

A

Is used to measure whether there is a significant difference between the means of the two populations

Tells u the probability that two sets of data are the same

16
Q

Null hypothesis

A

States that there is no significant difference between the two populations

17
Q

Alternative hypothesis

A

States that there is a significant difference between the two populations

18
Q

If p > 0.05 accept

19
Q

If p< 0.05 accept

A

Alternative hypothesis

20
Q

Correlation

A

Is a term used to define the extent of relatedness or relationship between two variables

21
Q

Health related fitness

A

Physiologically based and determines the individuals ability to meet the physical demands of an activity

22
Q

Components of health related fitness

A

Strength, local muscular endurance, cardio respiratory, flexibility and body composition

23
Q

Healthy fat of men

24
Healthy fat of women
20-25%
25
Strength
Ability of muscles to exert a force to overcome a resistance
26
Local muscular endurance
A single muscles ability to perform sustained work (cycling)
27
Cardio respiratory fitness
"Stamina" the ability of the body to supply enough energy to sustain sub maximal level of exercise
28
Benefits of cardio fitness
Improved metabolism Efficient delivery of oxygen Faster removal of waste Decreased level of stress
29
Flexibility
The movement available by our joints, usually controlled by the length of our muscles
30
Benefits of flexibility
Prevents injury Improves posture Maintains healthy joints Increased speed and power of muscle contraction Improves balance during movement
31
Body composition
The amount of fat compared to lean body mass (muscle bone connective tissue