572     BOOST_MATH_CHECK_THROW(variance(students_t_distribution<RealType>(nan)), std::domain_error);  in test_spots()
574     BOOST_MATH_CHECK_THROW(variance(students_t_distribution<RealType>(-1)), std::domain_error);  in test_spots()
575     BOOST_MATH_CHECK_THROW(variance(students_t_distribution<RealType>(0)), std::domain_error);  in test_spots()
576     BOOST_MATH_CHECK_THROW(variance(students_t_distribution<RealType>(1)), std::domain_error);  in test_spots()
577 …BOOST_MATH_CHECK_THROW(variance(students_t_distribution<RealType>(static_cast<RealType>(1.99999L))…  in test_spots()
578 …BOOST_MATH_CHECK_THROW(variance(students_t_distribution<RealType>(static_cast<RealType>(1.99999L))…  in test_spots()
579 …BOOST_MATH_CHECK_THROW(variance(students_t_distribution<RealType>(2)), std::domain_error); // df =…  in test_spots()
580     BOOST_CHECK_EQUAL(variance(students_t_distribution<RealType>(2.5)), 5); // OK.  in test_spots()
581     BOOST_CHECK_EQUAL(variance(students_t_distribution<RealType>(3)), 3); // OK.  in test_spots()
582     BOOST_CHECK_EQUAL(variance(students_t_distribution<RealType>(inf)), 1); // OK.  in test_spots()
684 …BOOST_CHECK((boost::math::isnan)(variance(ignore_error_students_t(std::numeric_limits<RealType>::q…  in test_spots()
685     BOOST_CHECK((boost::math::isnan)(variance(ignore_error_students_t(-1))));  in test_spots()
686     BOOST_CHECK((boost::math::isnan)(variance(ignore_error_students_t(0))));  in test_spots()
687     BOOST_CHECK((boost::math::isnan)(variance(ignore_error_students_t(1))));  in test_spots()
688 … BOOST_CHECK((boost::math::isnan)(variance(ignore_error_students_t(static_cast<RealType>(1.7L)))));  in test_spots()
689     BOOST_CHECK((boost::math::isnan)(variance(ignore_error_students_t(2))));  in test_spots()
721 …BOOST_CHECK(boost::math::isfinite(variance(ignore_error_students_t(2 + 2 * std::numeric_limits<Rea…  in test_spots()
722 …BOOST_CHECK(boost::math::isfinite(variance(ignore_error_students_t(static_cast<RealType>(2.0001L))…  in test_spots()
723 …BOOST_CHECK(boost::math::isfinite(variance(ignore_error_students_t(2 + 2 * std::numeric_limits<Rea…  in test_spots()