which of the following is called a bar above x what is the bar above x called in the sample mean what is the bar above x called in the sample mean? what's the bar above x called in the sample mean what's the bar above x called in the sample mean? what's the bar above x called in the sample mean? what's the bar above x called in the sample mean? what is the bar above x called in the sample mean what's the bar above x what is the bar above x called what does the y on the bar above mean? what's the bar above x called in the sample mean what's the bar above x called in the sample mean? what is the bar below x called in the sample? what's the bar above x called in the sample mean what's the bar above x called in the sample mean? what's the bar above x mean? what is the bar above x? what's the bar above x called in the sample mean what is bar above x called in the sample