| calculate_crossovers | Calculate the Number of Crossovers | 
| clean_data | Clean Data by Interpolating Missing Values | 
| do_ordering | Score and Order Data | 
| example_two_point_data | Example Data: Two Point Data | 
| find_next_good_datapoint | What Is the Next Non-Null Data Point? | 
| get_vars | Calculate Group Variance | 
| profrep | Perform Profile Repeatability | 
| retrieve_good_data | Retrieve Indices of Non-Missing Data for a Specific Time Point | 
| score_dfs | Compute Profile Repeatability Score | 
| score_individual_df | Score an Individual Data Frame | 
| sigmoid | Calculates the sigmoid function of the input | 
| sparrow_repeatability_three_point | Example Data: Sparrow Repeatability (3 Point Data) | 
| synthetic_data_four_point | Example Data: Synthetic 4-Point Data |