Eitan randomly selected volcanoes to travel to and study. After traveling, he had seen 13131313 cinder cone volcanoes, 18181818 shield volcanoes, and 6666 stratovolcanoes.

Use the observed frequencies to create a probability model for Eitan randomly selecting one volcano in the world on which to conduct an extensive study.

Input your answers as fractions or as decimals rounded to the nearest hundredth.

Type of volcano Estimated probability

Cinder cone

Shield

Stratovolcano

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

Identify the percent of change as an increase or a decrease. 75 people to 25 people response - correct increase decrease question 2 find the percent of change. round to the nearest tenth of a percent.