An experiment is set up to study the weights of 35 mice after they are injected with a drug. the population mean is 23.50 grams with a standard deviation of 3.40 grams. the standard error of he sample is (round off your answer to the nearest hundredth.)

Standard Error Formula is
SE = 

where:
SE = standard error
s = standard deviation
n = number of observations of the samples

so in the given, 35 is the sample size
3.40 grams is the standard deviation

SE = 
= 
≈ 0.65

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.