IB SEHS Topic 6.1 Statistical Analysis

3.90s

3.95s

4.00s

4.05s

The data is clustered closely to the mean.

The data is spread widely around the mean.

The data is normally distrubuted.

The data is not normally distributed.

Deviation of negative values from a mean.

Deviation of positive values from a mean.

Spread of the variability of data around a mean.

Statistical significance of variation around a mean.

A

B

C

D

Reliability of data

One standard deviation of data

Percent change of data

Validity of data

The ratio of the standard deviation to the mean expressed as a percent.

The sum of the standard deviation and the mean.

The ratio of the mean to the standard deviation expressed as a percentage.

The sum of the standard deviation subtracted from the mean.

Ratio of the standard deviation to the mean value of a set of data.

Variability of a set of data from the median.

Variability of the mode value of a set of data.

Variability of a set of data from the mean.

A

B

C

D

98%

65%

95%

68%

Coefficient of variation = standard deviation − mean

Coefficient of variation = standard deviation ÷ mean × 100 %

Coefficient of variation = mean − standard deviation

Coefficient of variation = mean ÷ standard deviation × 100 %