Some analysis is required in support of the design of the experiment while other analysis is performed after changes in the factors are formally found to produce statistically significant changes in the responses.
sˌʌm ɐnˈæləsˌɪs ɪz ɹᵻkwˈaɪɚd ɪn səpˈoːɹt ʌvðə dɪzˈaɪn ʌvðɪ ɛkspˈɛɹɪmənt wˌaɪl ˈʌðɚɹ ɐnˈæləsˌɪs ɪz pɚfˈɔːɹmd ˈæftɚ tʃˈeɪndʒᵻz ɪnðə fˈæktɚz ɑːɹ fˈɔːɹməli fˈaʊnd tə pɹədˈuːs stɐtˈɪstɪkli sɪɡnˈɪfɪkənt tʃˈeɪndʒᵻz ɪnðə ɹᵻspˈɑːnsᵻz.