Solve thefollowing. Please and thanks

Which statement about sample preparation is FALSE? It might be necessary to remove interfering species prior to analysis. All if the statements are false. None of the statements is false. Samples with a dilute concentration might need to be concentrated prior to analysis. Samples may need to be dissolved. Samples need to have a high concentration of analyte. Question 14 ( 2 points) What is the variance for the data in Table 1. Report the answer to three decimal places