statistic homework
The students in a statistics class have the following majors:
a) Make a frequency distribution for this data.
– Click here to enter answer –
b) Make a relative frequency distribution for this data. Include relative percentages on this table.
– Click here to enter answer -Consider the following set of data:
{32, 40, 52, 23, 39}
a) Find the mean of this sample.
– Click here to enter answer –
b) Find the median.
– Click here to enter answer –
c) Find the mode of this set.
– Click here to enter answer –
2. Consider the following set of data:
{21,32,21,15,80,84,90,78}
a) Find the mean of this sample.
– Click here to enter answer –
b) Find the median.
– Click here to enter answer –
c) Find the mode of this set.
– Click here to enter answer
3. Consider the following data:
323 412 380 401 280 301 317 440 297 371 353 394
427 399 375 438 329 309 361 340
a) Find the 60th and 70th percentile of this data.
– Click here to enter answer –
b) Find the quartiles for this data.
– Click here to enter answer –
4. Consider the following data:
{17, 14, 20, 18, 11}
a) Find the sample mean of this data.
– Click here to enter answer –
b) Find the range of this data.
– Click here to enter answer –
c) Find the sample standard deviation of this data.
– Click here to enter answer –
d) Find the coefficient of variation.
– Click here to enter answer –
Given a data point x, what does the z-score tell us about x?
– Click here to enter answer –
2. Suppose that you have a set of data that has a mean of 34 and a standard deviation of 6.
a) Is the point 28 above, below, or the same as the mean. How many standard deviations is 28 from the mean.
– Click here to enter answer –
b) Is the point 46 above, below, or the same as the mean. How many standard deviations is 46 from the mean.
– Click here to enter answer –
c) Is the point 43 above, below, or the same as the mean. How many standard deviations is 43 from the mean.
– Click here to enter answer –
d) Is the point 20 above, below, or the same as the mean. How many standard deviations is 20 from the mean.
– Click here to enter answer –
