Instructions for the Experiment / Data Collection regarding questions 1-4: Collect data regarding the caffeine content in a 16oz cup of coffee. Collect the amount of caffeine in 20 different brands of coffee.

1.Calculate the following descriptive statistics corresponding to the data you collected regarding caffeine content in a 16oz cup of coffee.

a) Mean
b) Median
c) Mode
d) Range
e) Standard Deviation
f) Variance
g) Q1
h) Q3

Where is the data? I'll start it for you.

Find the mean first = sum of scores/number of scores

Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

Standard deviation = square root of variance

To calculate the descriptive statistics for the caffeine content in a 16oz cup of coffee, you will need to follow these steps:

1. Collect data: Gather the amount of caffeine in 20 different brands of coffee, each in a 16oz cup.

2. Calculate the mean: Add up all the caffeine values and then divide by the total number of observations (in this case, 20).

3. Calculate the median: Arrange the caffeine values in ascending order and find the middle value. If there is an even number of observations, calculate the average of the two middle values.

4. Calculate the mode: Identify the value(s) that occur most frequently in the data.

5. Calculate the range: Find the difference between the highest and lowest caffeine values.

6. Calculate the standard deviation: This measures the dispersion or spread of the data. There is a formula for this calculation, but it is easier to use a statistical software or spreadsheet program to automatically calculate this value.

7. Calculate the variance: This is the square of the standard deviation and can also be computed using statistical software or a spreadsheet program.

8. Calculate Q1 and Q3: These are the first and third quartiles, respectively. To find the values, first, arrange the caffeine values in ascending order. Then determine the median of the lower half (Q1) and the median of the upper half (Q3).

Following these steps will allow you to calculate the descriptive statistics for the caffeine content in a 16oz cup of coffee.