What is incorrect about the following statement?

Here is a statement characterizing the class in green:

11 cookies have 21 chocolate chips.

What is incorrect about the following statement?

Simple things, like chocolate chips, are easy to define.

What is incorrect about the following statement?

The sum of predictive errors will always be equal to 1.

Above is the formula used to find the estimated median value of data placed in an ungrouped or grouped frequency table.

What is incorrect about the following statement?

The value “ $n_w$  ” is equal to the total number of observations found below the class of interest.

Given the desired number of classes (nClasses) = 5, calculate the class width to be used when grouping the frequency table shown above.

Following the last question, If your class width (CW) is not a whole number, what must you do and why?

Name one disadvantage and one advantage of grouping data in a frequency table

With respect to class limits, It is recommended that you do what before presenting information in a grouped frequency table?

Using the “CW” you calculated in Q6, determine if the estimated median for the following grouped frequency table is correct?

If incorrect, identify the error(s) made; then provide the correct estimation of median

Note: Class of interest is highlight in grey

Look at the above grouped frequency table with 3 classes. What is incorrect about the following statement?

The width of each class is 3.

What is incorrect about the following statement?

You can infer from this chart that no cookies had a count of 27 chocolate chips.

What is incorrect about the following statement?

Since the proportions of each class are somewhat even (around a third), we can assume this would remain true for an ungrouped frequency table of the same data.

There are 20 numbers in the data set, calculate the class width for the following data, using 5 classes:

5, 10, 7, 19, 26, 12, 15, 7, 6, 8, 17, 17, 22, 21, 7, 7, 24, 5, 6, 5