Calculate the measures of variability: range, variance, and standard deviation. Create a frequencydistribution table that includes relative and cumulative relative frequency. Then create a graph of your choosing.
7. (two points) I had 15 students last term who earned the following grades: 98 85 89 73 72 85 85 92 85 What is the 5 numbers summary for these students? Create a box plot for the data.97 92 93 95 86 878. (two points) I developed an achievement test and normalized it on people throughout the country over a year. My test has scores that are normally distributed with a mean of 100 and a standard deviation of 20.a.Find the probability that a randomly selected adult has IQ < 115
b.Find the probability that a randomly selected adult has IQ > 700.0064c.Find P30,which is the IQ score at the 30th percentile.
d.What percentage of adults have scores between 80 and 120?9. (two points) Ten peas are generated from parents having the green/yellow pair of genes so there is a 75% probability that an individual pea will have a green pod. Find the probability that among the 10 offspring peas, no more than 6 have green pods.