We measured the flat area of 30 apartments and we have measured the following values in \( m^{2} \) : \( 82.6,57.3,70.4,65,48.4,103.8,73.6,43.5,66.1,93,52.6,70,84.2,55,81.3,61.5,75.1,34.8 \), \( 62.4,116,70.1,63.6,93,59.2,65.9,77.2,52.8,68.7,79.2,87.4 \). a) Create a table of grouped frequency distribution for the number of classes \( k=9 \). b) Construct a histogram of relative frequencies of the flat areas. c) From the specified values estimate the sample mean and the variance. d) From the middle values of the intervals and from their frequencies estimate the sample mean and the variance.

The data below represents students test scores. Which of the following is the median of the set of data? \( 11,12,18,14,22,17,17,12,25,12,13 \)

Question: 190150 When the weights of newborn babies are graphed, the distribution of weights is symmetric with the majority of weights centered around a single peak. Which of the following describes the shape of this distribution? Bimodal Bell-shaped Skewed right

What is a scatter plot?

How do you identify the relationship between two variables in a scatter plot?

Asich of the following relationships represents a positive correlation between two variables? As the number of miles driven increases, the amount of gasoline in the tank decreases. As the number of hours a person exercises decreases, the weight of that person increases. Aeceives increases, the growth rate of the plant increases. Ases, the student's overall grade remains the same.