please answer all questions.

QUESTION 2 a) A researcher is interested in comparing the sodium content (in grams) between sea salt and table salt. The following table shows the summary of the statistics for the sodium content for the two types of salt. Summary of Statistics Sea Salt Table Salt N 8 8 Mean 193.125 231.25 Std. Error of Mean 46.722 27.087 Median 200 255 Std. Deviation 132.151 76.614 Variance 17463.839 5869.643 Minimum 40 130 Maximum 410 340 Using an appropriate measure, determine which type of salt is more consistent in their sodium contents. (3 marks) b) The following data represent the age of tourists who took the boat along the Melaka River in November 2018. UINWON A N - OO - OOO - OUI A W N 9 9 i. Name the above diagram. (1 mark) ii. State the age of the youngest and oldest tourists involved in this study. (2 marks)