# Free Guide to MyStats Labs in QNT/351 - Week 2

Trying to understand statistics through an online program can be very frustrating. In order to get the correct answers, we have included some important tips and links that will make your life a whole lot easier.

You could spend hours and hours working through the problems, but chances are you will forget the information by the time the final exam comes along. Its recommended that you find a good outside reference that you can use throughout the entire course if you strive to obtain a good grade in QNT351.

## QNT351 Week 2 Discussion Questions

**Where would you see descriptive statistics used in your work place?**

All over the place, you will see descriptive statistics in anything that is presented in a graph or chart. For example, an analysis of sales in the form of a graph is a common way to display goals to sales employees.

**Can mean, median, or mode be calculated from all statistical data? Explain why or why not. **

In all cases it will be possible to calculate the mean and median from a dataset with at least two numbers. However, the mode is the most frequent score/number in a data set and not all data sets have a mode. If every number is different within a data set it will be impossible to calculate a mode.

**When is the mean the best measure of central tendency? When is the median the best measure of central tendency?**

All situations are different, but the ideal time to use the mean is when there are no outliers or skews in the dataset. The mean is the average an outlier will skew the number and reduce the accuracy of the central tendency

On the other hand, the median is the middle of a dataset. It is better is to use the median to measure the central tendency when there are skews and outliers in the data.

## QNT351 Week 2 Answers from MyStats Lab

**1.Choose the correct answer below:**

A. It is an estimate or prediction or some other generalization about a population based on information contained in a sample

B. It is a characteristic or property of an individual experimental unit

C. It is the process used to assign numbers to variables of individual population units

__D. It is the science that deals with collection, classification, and interpretation of information or data__

**2. Explain the difference between qualitative and quantitative data**

Choose the correct answer bellow

A. Quantitative data are collected from an observational study , while qualitative data are from a designed experiment

B. Quantitative data are data from a sample, while qualitative data are data from a population

__C. Quantitative data are numerical in nature, while qualitative data are categorical in nature__

D. Quantitative data are data from a population, while qualitative data are data from a sample

E. Quantitative data are categorical in nature, while qualitative data are numerical in nature

F. Quantitative data are collected from a designed experiment, while qualitative data are from a observational study