7th Math STAAR Practice

Front

What is the formula for the surface area of a triangular prism?

Back

The surface area (SA) of a triangular prism can be calculated using the formula: SA = bh + l(s1 + s2 + s3), where b is the base area, h is the height, and l is the length of the prism.

Front

How do you calculate the total pounds of tomatoes sold over two weeks if sold at different rates?

Back

To find the total pounds sold, multiply the pounds sold per day by the number of days for each week and then add the totals. For example: (4.8 lb * 3 days) + (5.6 lb * 4 days) = total pounds.

Front

What is a dot plot and how is it used to compare data?

Back

A dot plot is a statistical chart that consists of data points plotted on a simple scale. It is used to visualize the distribution of data and compare different sets of data.

Front

How do you find the percentage of a specific category in a survey?

Back

To find the percentage, divide the number of responses in that category by the total number of responses and multiply by 100. For example: (number of responses for sprinkles / total responses) * 100.

Front

What does it mean if the median of Class K is less than the median of Class M?

Back

It indicates that the middle value of Class K's data set is lower than that of Class M, suggesting that Class K has generally lower values in the data set.

Front

What is the mode in a data set?

Back

The mode is the value that appears most frequently in a data set. A data set may have one mode, more than one mode, or no mode at all.

Front

How do you interpret survey results regarding favorite types of nuts?

Back

To interpret survey results, compare the proportions of each type of nut preferred. For example, if 25% prefer pecans and 100% prefer cashews, then customers are 4 times as likely to prefer cashews.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set. It gives an idea of how spread out the values are.

Front

How do you calculate the total surface area of a prism?

Back

To calculate the total surface area of a prism, find the area of the base and multiply by the height, then add the areas of the lateral faces.

Front

What is the difference between mean, median, and mode?

Back

Mean is the average of a data set, median is the middle value when data is ordered, and mode is the most frequently occurring value.