All new-born children are measured and weighed at birth. During the week of Sept 1st to 5th, 50 babies were born. Their weights (in ounces) and lengths (in inches) were recorded. The mean and median weights for the sample of 25 babies were 100 ounces and 120 ounces, respectively. Their lengths (measured from the top of their head to the bottom of one of their heels) was normally distributed with mean 18.5 inches and standard deviation 1.5 inches.Outliers were detected among the sample weights and none among the lengths.

A.Identify the population in this study.

Population:

B.Identify the variables and units:

Variable-1: units:

Variable-2: units:

C.Is the study univariate, bivariate or multivariate?Explain.

Type of study:

Explain:

D.What is the sample size? Is it large or small?Explain.

Sample size:

Large or small:

Explain:

E.Describe the distribution of the weights of all new-born children in this study (i.e. symmetrical, right skewed, ... etc.).Justify your answer.

Type of distribution:

Justify:

F.Estimate the median length of new-born children.Justify your estimate.

Median =

Justify:

G.Is the mean (100 ounces) or median (120 ounces) the better measurement of the center for baby's weights?Explain.

Mean or median:

Explain:

H.What is the best measurement for spread for the babies:

Weights:

Length: