How to Analyse Time Series Results

Conjointly’s Time series report simplifies the process of analysing results by time periods (called waves), making it easier to identify trends and shifts in respondent attitudes and behaviours over time.

Setting up time series in your report

Time series can be set up by navigating to the Time series tab next to the Insight tab within your report. Please note that the tab will not be available if your report consists only of conjoint or monadic blocks.

By default, the report’s results are split into two equal waves.

There are two ways to specify the time periods/waves in your report.

Split period

1. Click on under the Action tab to add another wave to split the period.
2. Click on and specify your desired date and time.
3. Once you have set up your desired waves, click on Save and apply settings.

Change periods

1. Next to the Change periods, you can select one of the options from the dropdown menu:

• Split by days
• Split by weeks (starting from Sunday)
• Split by months
• Split by quarters (January 1, April 1, July 1, October 1)
• Split by years

2. Click Apply to replace existing waves with new waves according to your choice.
3. Click on Save and apply settings.

Outputs of time series report

The time series report shows the results of each question within each time period specified, as well as summary information for each wave. The following are the time series outputs for each question type.

Multiple choice and dropdown menu questions

For multiple choice and dropdown menu questions, the report produces a bar chart showing the percentage of respondents who selected each option over time.

Ranking questions

For ranking questions, the report displays a line chart showing the average rank of items over time.

Number questions

For number questions, the report displays the following outputs:

• Mean and median values over time.
• Descriptive statistics including the mean, standard deviation, median, minimum, maximum, mode, and 10% windsorized for the responses in each wave.

Likert scale questions

For Likert scale questions, the report displays the following outputs:

• The bar chart showing the cumulative percentage of respondents for the top 1, 2, 3, or 4 boxes over time.
• Descriptive statistics including mean, standard deviation, median, minimum, maximum, and mode for the responses in each wave.
• Top N boxes over time showing the cumulative percentage of respondents for the top 1, 2, 3 and 4 boxes for each wave.

Dual negative-positive scale questions

For dual negative-positive scale questions, the report displays the following outputs:

• The bar chart showing the overall score over time.
• Top N boxes showing the cumulative percentage of respondents for the top 1, 2, 3 and 4 boxes for each wave.

Constant sum questions

For constant sum questions, the report displays the following outputs:

• The bar chart showing the mean score over time.
• The line chart showing the mean score over time.

Net Promoter Score questions

For Net Promoter Score questions, the report produces a bar chart displaying the net promoter score over time.

Van Westendorp questions

For Van Westendorp questions, the report displays a line chart showing the Price Sensitivity Meter over time.

Gabor-Granger questions

For Gabor-Granger questions, the report displays the following outputs:

• The line chart showing the elasticity of demand over time.
• The line chart showing the revenue-maximising price point over time.

Swipe card questions

For single swipe card and set of swipe cards questions, the report produces bar charts showing the percentage of likes over time for each swipe card.

Star rating grid questions

For star rating grid questions, the report produces a line chart showing the mean score over time.

Slider questions

For slider questions, the report produces a line chart showing the means by option over time.

Export to Excel

You can export both the time series report and its components for offline analysis through the Add to export or Quick export functions.