Select all transformations that maintain a shape's congruency.

a translation six units up

a reflection across the x-axis

a 180° rotation about the origin

a dilation with a scale factor of 2

a reflection across the y-axis and then a translation three units left

a translation two units down and then a dilation with a scale factor of less than 1

a reflection across the y-axis and then a dilation with a scale factor greater than 1

This assignment is past the original due date o this data is from a sample. calculate the mean, standard deviation, and variance 16.7 11.1 46.7 14.8 13.3 16.6 18.5 47.3 42,8 show the following answers to 2 decimal places. sample mean- sample standard deviation ( use the standard deviation above for your calculation.) sample variance ooops- now you discover that the data was actually from a population! so now you must give the population standard deviation.