MAT 1260 Spring Final Review

Meaning of r = 1 and r = -1

• An r value of 1 indicates a perfect positive correlation, while -1 indicates a perfect negative correlation.

• An r value of 1 indicates no correlation, while -1 indicates a strong positive correlation.

• An r value of 1 indicates a weak negative correlation, while -1 indicates a perfect positive correlation.

• An r value of 1 indicates a perfect negative correlation, while -1 indicates no correlation.

Identify as Qualitative or Quantitative: Hours of Sleep

• Qualitative

• Quantitative

• Categorical

• Nominal

Effect of Outliers on Median

• The median is significantly affected by outliers.

• The median is less affected by outliers compared to the mean.

• The median is the same as the mean in the presence of outliers.

• Outliers have no effect on the median.

Given a mean of 18 and a standard deviation of 3, 95% of the data falls between which two values?

• 10 and 20

• 12 and 24

• 15 and 21

• 14 and 22

Identify as Discrete or Continuous: height/weight

• Discrete

• Continuous

• Categorical

• Nominal

Create a Pie Chart from the following Frequency of 25 families who were asked what type of animal they would prefer to own: Dog (10), Cat (11), Fish (3), Bird (1) out of 25 families.

• Dog (40%)

• Cat (44%)

• Fish (12%)

• Bird (4%)

Identify as Qualitative or Quantitative: Dominant Hand

• Qualitative

• Quantitative

• Ordinal

• Nominal

Interquartile Range (IQR) of the data set: 10, 60, 50, 30, 40, 20

• 20

• 25

• 30

• 35

Probability of selecting a junior given you are female

• @@\frac{1}{2}@@

• @@\frac{1}{3}@@

• @@\frac{2}{3}@@

• @@\frac{3}{4}@@

Identify the association and give the best possible r value

• Positive; r=.78

• Negative; r=-.45

• No association; r=0.00

• Weak positive; r=.25