How important is discrete mathematics for a Data analysis?

A recent experiment included measuring the weight of a package of raw almonds.  This type of data would be considered a: Discrete variable or Continuous variable?

What are two variables that will be can be used in a  chi-square analysis based in social work? What would the best attributes be for each variable?

Define the process of mathematical modelling?

What is the definition of continuous data?

The mean of the data set {9,5, y, 2, x} is twice the data set {8, x, 4,1,3}. What is (y- x)2?

Give an example of how a nonrepresentative sample can severely affect a regression analysis.

Describe in your own words what it means to perform a linear least squares analysis. Provide an example to substantiate your claims

A store manager kept track of the number of newspapers sold each week over a seven-week period. The results were as follows: 88, 71, 201, 113, 269, 248, 250 Find the 5-number summary(Q1, Q2, Q3) min and maximum for the data. Is the data discrete or continuous?

How do you make the z-tables that go with this question?