# How do you find Q1 and Q3 in SPSS?

## How do you find Q1 and Q3 in SPSS?

SPSS will calculate Q3 and Q1 for you. Click on the “Statistics” button and then click on “Quartiles” in the “Percentiles” box in the upper left. Once you know Q3 and Q1 you can calculate the interquartile range by subtracting Q1 from Q3.

## How do you calculate the first quartile?

The quartile formula helps to divide a set of observations into 4 equal parts. The first quartile lies in the middle of the first term and the median….What Is Quartile Formula?

1. First Quartile(Q1) = ((n + 1)/4)th Term.
2. Second Quartile(Q2) = ((n + 1)/2)th Term.
3. Third Quartile(Q3) = (3(n + 1)/4)th Term.

What is the interquartile range in SPSS?

The IQR is a metric used to represent the midspread of the data. It is calculated by subtracting the 25th percentile (Q1) from the 75th percentile (Q3).

### What is percentile in SPSS?

A percentile is the value in a data distribution below which a given percentage of values falls. For example, the 25th percentile (also known as the first quartile) is the value below which 25% of the values fall.

### What’s a quartile in statistics?

A quartile is a statistical term that describes a division of observations into four defined intervals based on the values of the data and how they compare to the entire set of observations.

What are the view modes of SPSS?

SPSS Data View & Variable View An SPSS data file always has two tabs in the left bottom corner: Data View is where we inspect our actual data and. Variable View is where we see additional information about our data.

#### How to calculate percentiles and quartiles in SPSS?

To calculate percentiles and quartiles in SPSS, do the following: Open the data file you are using. For this example, open the file Select the menu item \$Analyze rightarrow Descriptive~Statistics rightarrow Explore\$ Click on the name of the variable for which you want to calculate the percentiles and quartiles.

#### How to find interquartile range in SPSS output?

How to find Quartiles and Interquartile Range in SPSS Output 1 Its 25% is Q1 (the first quartile), 2 Its 75% is Q3 (the third quartile), 3 Its 50% is the median, 4 Also you calculate IQR by subtracting Q1 from Q3.

How to find the Q1 and Q3 in SPSS?

How to find the Q1 and Q3 in SPSS. 1 2. In the Frequencies window, drag the variable of interest over to the ‘ Variable (s) ‘ box. Then click the ‘ Statistics ‘ button. 2 3. In the new window, click the ‘ Quartiles ‘ option. Then click the ‘ Continue ‘ button. 3 4. Finally, click the ‘ OK ‘ button.

## Where to find the data in SPSS Week 4?

The data can be found in the SPSS file: Week 4 data file.sav and looks like this: For an in-depth explanation of what each of the variables represent, revisit the Descriptive Statistics tutorial. When deciding what type of graph to produce, you first need to think about (1) the type of data you have collected: interval, ordinal or nominal data.

19/08/2019